Company lists · Data refreshed October 2026
Top 25 Vocabulary builder software companies based in the United States
RevenueBase identified 68 company matches for vocabulary builder software companies associated with the United States as of October 2026 and tracks 2,451 professional contacts across them, including 1,023 with verified work emails. New York is the largest hub.
This list covers company matches for vocabulary builder software companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest vocabulary builder software companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,874 contacts → | ||||
Exact match “Duolingo is the most downloaded education app in the history of the App Store.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 2 | 156 contacts → | ||||
Exact match “Mango Languages offers a cutting-edge digital adaptive language-learning system, leveraging proven methodologies and language-specific content to foster retention and rapidly…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 3 | 31 contacts → | ||||
Exact match “Lingco is an adaptive language learning platform for schools.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 4 | 30 contacts → | ||||
Exact match “Membean is a vocabulary program that builds word consciousness.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 5 | 10 contacts → | ||||
Exact match “VocabularySpellingCity is an award-winning game-based, interactive educational website and mobile app used to build literacy skills with vocabulary and spelling.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 6 | 10 contacts → | ||||
Exact match “Curiosity Media is a company run by a world-class team of engineers, content experts, and data scientists who use cutting-edge technology to build accurate, innovative solutions…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 7 | 8 contacts → | ||||
Exact match “Gabb Global is the ultimate language-learning tool for students and travelers.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 8 | 7 contacts → | ||||
Exact match “NYC English is a US-based, industry leader specializing in English language learning, with operations and product development based in Asia.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 9 | 7 contacts → | ||||
Exact match “Wordcraft rapidly teaches vocabulary and reading by gamifying the Latin and Greek roots of English.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 10 | 6 contacts → | ||||
Exact match “Clear communication is a key component of personal and organizational success, customer satisfaction, increasing human capital and the bottom line.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 11 | 5 contacts → | ||||
Exact match “Browse our curated teacher resources for a better way to teach vocabulary or try our free and fun adaptive activities to boost word learning.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 12 | 5 contacts → | ||||
Exact match “QTALK PUBLISHING LLC, more commonly QTALK, is a language education publishing company, founded by Maurice Hazan in 2008, headquartered in Downtown Manhattan, New York City, United…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 13 | 4 contacts → | ||||
Exact match “Extempore is a SaaS EdTech platform that allows language teachers to develop students’ reading, writing, listening, speaking, and cultural skills in a target language.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 14 | 4 contacts → | ||||
Exact match “FluentJoy is a video-based learning and improvement app to learn English.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 15 | 4 contacts → | ||||
Exact match “With over 10 million learners worldwide, Hello-Hello apps are among the top-selling language learning apps in the U.S.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 16 | 3 contacts → | ||||
Exact match “Eduling aims to develop real communicative competence in various languages through the Eduling Speak app, language courses, multilingual materials, and other training services.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 17 | 2 contacts → | ||||
Exact match “We are building the next generation of mobile apps for language learners around the world.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 18 | 2 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 19 | 2 contacts → | ||||
Exact match “Conjuguemos is a company based out of Newton, MA, United States.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 20 | 2 contacts → | ||||
Exact match “Linguamill is an AI-powered language learning platform that helps you turn real-life content into vocabulary you'll actually remember.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 21 | 2 contacts → | ||||
Exact match “Clozemaster is game to rapidly expand your vocabulary in another language by filling in the missing word for thousands of sentences in your target language.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 22 | 2 contacts → | ||||
Exact match “Positive Learning provides schools with an online learning program that helps their English language learners develop the academic vocabulary they need to be successful.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 23 | 1 contacts → | ||||
Exact match “Sounds American is an EdTech startup that develops content, methodologies, and tools for people who want to improve their pronunciation skills.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 24 | 1 contacts → | ||||
Exact match “Linguathon is an engine for learner centered language learning platforms (ESL/ELL, for example, as well as platforms for other languages), allowing learners and teachers alike to…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 25 | 1 contacts → | ||||
Exact match “Message us for any bulk Phrase It or Prep It English game orders.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “vocabulary builder software companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 68 vocabulary builder software companies based in the United States
See the full list, filter by size, metro and specialty, and access 1,023 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Vocabulary builder software companies based in the United States at a glance
As of Oct 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 68 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “vocabulary builder software companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 1,023 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on October 20, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “vocabulary builder software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many vocabulary builder software companies are there based in the United States?
RevenueBase identified 68 company matches for vocabulary builder software companies associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Duolingo tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most vocabulary builder software companies?
New York leads with 7 company records, followed by Minneapolis (3) and Pittsburgh (3).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,023 professional contacts with verified work emails tracked across these 68 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 68 vocabulary builder software companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Vocabulary builder software companies by geography
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Vocabulary builder software companies based in India
- Vocabulary builder software companies based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
Company intelligence · public preview
Top 25 vocabulary builder software companies based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 68 matching company records for vocabulary builder software companies based in the United States, with 2,451 tracked contacts and 1,023 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 vocabulary builder software companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Duolingoduolingo.comHQ: Pittsburgh, PA, United StatesReported employees: 501-1,000 | Pittsburgh, PA, United States | 501-1,000 | Exact match | 1,874 contacts → |
“Duolingo is the most downloaded education app in the history of the App Store.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Mango Languagesmangolanguages.comHQ: Detroit, MI, United StatesReported employees: 51-200 | Detroit, MI, United States | 51-200 | Exact match | 156 contacts → |
“Mango Languages offers a cutting-edge digital adaptive language-learning system, leveraging proven methodologies and language-specific content to foster retention and rapidly…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Lingcolingco.ioHQ: Lansing, MI, United StatesReported employees: 11-50 | Lansing, MI, United States | 11-50 | Exact match | 31 contacts → |
“Lingco is an adaptive language learning platform for schools.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Membeanmembean.com HQ: Portland, OR, United StatesReported employees: 11-50 | Portland, OR, United States | 11-50 | Exact match | 30 contacts → |
“Membean is a vocabulary program that builds word consciousness.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Vocabularyspellingcityspellingcity.com HQ: Fort Lauderdale, FL, United StatesReported employees: 51-200 | Fort Lauderdale, FL, United States | 51-200 | Exact match | 10 contacts → |
“VocabularySpellingCity is an award-winning game-based, interactive educational website and mobile app used to build literacy skills with vocabulary and spelling.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Curiosity Mediacuriositymedia.comHQ: Arlington, VA, United StatesReported employees: 11-50 | Arlington, VA, United States | 11-50 | Exact match | 10 contacts → |
“Curiosity Media is a company run by a world-class team of engineers, content experts, and data scientists who use cutting-edge technology to build accurate, innovative solutions…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Gabb Globalgabbglobal.comHQ: Los Angeles, DC, United StatesReported employees: 11-50 | Los Angeles, DC, United States | 11-50 | Exact match | 8 contacts → |
“Gabb Global is the ultimate language-learning tool for students and travelers.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  NYC English LLCnycenglish.nycHQ: Lehi, UT, United StatesReported employees: 11-50 | Lehi, UT, United States | 11-50 | Exact match | 7 contacts → |
“NYC English is a US-based, industry leader specializing in English language learning, with operations and product development based in Asia.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Wordcraftplaywordcraft.com HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 7 contacts → |
“Wordcraft rapidly teaches vocabulary and reading by gamifying the Latin and Greek roots of English.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Carnegie Speech, LLCcarnegiespeech.comHQ: Pittsburgh, PA, United StatesReported employees: 11-50 | Pittsburgh, PA, United States | 11-50 | Exact match | 6 contacts → |
“Clear communication is a key component of personal and organizational success, customer satisfaction, increasing human capital and the bottom line.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | vocabulary.comvocabulary.com HQ: San Mateo, CA, United StatesReported employees: 11-50 | San Mateo, CA, United States | 11-50 | Exact match | 5 contacts → |
“Browse our curated teacher resources for a better way to teach vocabulary or try our free and fun adaptive activities to boost word learning.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Qtalk Publishing LLCqtalk.comHQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 5 contacts → |
“QTALK PUBLISHING LLC, more commonly QTALK, is a language education publishing company, founded by Maurice Hazan in 2008, headquartered in Downtown Manhattan, New York City, United…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Extemporeextemporeapp.com HQ: Minneapolis, MN, United StatesReported employees: 11-50 | Minneapolis, MN, United States | 11-50 | Exact match | 4 contacts → |
“Extempore is a SaaS EdTech platform that allows language teachers to develop students’ reading, writing, listening, speaking, and cultural skills in a target language.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Fluentjoyfluentjoy.comHQ: Beaverton, OR, United StatesReported employees: 1-10 | Beaverton, OR, United States | 1-10 | Exact match | 4 contacts → |
“FluentJoy is a video-based learning and improvement app to learn English.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Hello-Hellohello-hello.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 4 contacts → |
“With over 10 million learners worldwide, Hello-Hello apps are among the top-selling language learning apps in the U.S.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Edulingeduling.org HQ: Pittsburgh, PA, United StatesReported employees: 1-10 | Pittsburgh, PA, United States | 1-10 | Exact match | 3 contacts → |
“Eduling aims to develop real communicative competence in various languages through the Eduling Speak app, language courses, multilingual materials, and other training services.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Wordbudwordbud.comHQ: Austin, TX, United StatesReported employees: 1-10 | Austin, TX, United States | 1-10 | Exact match | 2 contacts → |
“We are building the next generation of mobile apps for language learners around the world.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Ultralingua, INCultralingua.comHQ: Twin Cities, MN, United StatesReported employees: 11-50 | Twin Cities, MN, United States | 11-50 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | Conjuguemosconjuguemos.com HQ: Newton, MA, United StatesReported employees: 1-10 | Newton, MA, United States | 1-10 | Exact match | 2 contacts → |
“Conjuguemos is a company based out of Newton, MA, United States.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Linguamilllinguamill.com HQ: Tampa, FL, United StatesReported employees: 1-10 | Tampa, FL, United States | 1-10 | Exact match | 2 contacts → |
“Linguamill is an AI-powered language learning platform that helps you turn real-life content into vocabulary you'll actually remember.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Clozemasterclozemaster.com HQ: Somerville, MA, United StatesReported employees: 1-10 | Somerville, MA, United States | 1-10 | Exact match | 2 contacts → |
“Clozemaster is game to rapidly expand your vocabulary in another language by filling in the missing word for thousands of sentences in your target language.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Positive Learningpositivelearning.com HQ: Provo, UT, United StatesReported employees: 1-10 | Provo, UT, United States | 1-10 | Exact match | 2 contacts → |
“Positive Learning provides schools with an online learning program that helps their English language learners develop the academic vocabulary they need to be successful.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Sounds Americansoundsamerican.net HQ: Portland, United StatesReported employees: 11-50 | Portland, United States | 11-50 | Exact match | 1 contacts → |
“Sounds American is an EdTech startup that develops content, methodologies, and tools for people who want to improve their pronunciation skills.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Linguathonlinguathon.com HQ: Glendale, CA, United StatesReported employees: 1-10 | Glendale, CA, United States | 1-10 | Exact match | 1 contacts → |
“Linguathon is an engine for learner centered language learning platforms (ESL/ELL, for example, as well as platforms for other languages), allowing learners and teachers alike to…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | ESL With Purpose, LLCeslwithpurpose.com HQ: Tulsa, OK, United StatesReported employees: 1-10 | Tulsa, OK, United States | 1-10 | Exact match | 1 contacts → |
“Message us for any bulk Phrase It or Prep It English game orders.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 68 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Vocabulary builder software companies: dataset insights
October 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
68 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 68 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for vocabulary builder software companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many vocabulary builder software companies did RevenueBase find based in the United States?
The saved snapshot records 68 matching company records, 2,451 tracked contacts and 1,023 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Vocabulary builder software companies by geography
Cite this list
RevenueBase Data Team. Top 25 vocabulary builder software companies based in the United States. Snapshot: October 20, 2026. https://revenuebase.ai/companies/vocabulary-builder-software-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Vocabulary builder software companies based in India
- Vocabulary builder software companies based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
Company intelligence · public preview
Top 25 vocabulary builder software companies based in the United States
RevenueBase records 68 matching company records for vocabulary builder software companies based in the United States, with 2,451 tracked contacts and 1,023 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 vocabulary builder software companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Duolingoduolingo.com HQ: Pittsburgh, PA, United StatesReported employees: 501-1,000 | Pittsburgh, PA, United States | 501-1,000 | Exact match | 1,874 contacts → |
“Duolingo is the most downloaded education app in the history of the App Store.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Mango Languagesmangolanguages.com HQ: Detroit, MI, United StatesReported employees: 51-200 | Detroit, MI, United States | 51-200 | Exact match | 156 contacts → |
“Mango Languages offers a cutting-edge digital adaptive language-learning system, leveraging proven methodologies and language-specific content to foster retention and rapidly…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Lingcolingco.io HQ: Lansing, MI, United StatesReported employees: 11-50 | Lansing, MI, United States | 11-50 | Exact match | 31 contacts → |
“Lingco is an adaptive language learning platform for schools.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Membeanmembean.com HQ: Portland, OR, United StatesReported employees: 11-50 | Portland, OR, United States | 11-50 | Exact match | 30 contacts → |
“Membean is a vocabulary program that builds word consciousness.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Vocabularyspellingcityspellingcity.com HQ: Fort Lauderdale, FL, United StatesReported employees: 51-200 | Fort Lauderdale, FL, United States | 51-200 | Exact match | 10 contacts → |
“VocabularySpellingCity is an award-winning game-based, interactive educational website and mobile app used to build literacy skills with vocabulary and spelling.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Curiosity Mediacuriositymedia.com HQ: Arlington, VA, United StatesReported employees: 11-50 | Arlington, VA, United States | 11-50 | Exact match | 10 contacts → |
“Curiosity Media is a company run by a world-class team of engineers, content experts, and data scientists who use cutting-edge technology to build accurate, innovative solutions…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Gabb Globalgabbglobal.com HQ: Los Angeles, DC, United StatesReported employees: 11-50 | Los Angeles, DC, United States | 11-50 | Exact match | 8 contacts → |
“Gabb Global is the ultimate language-learning tool for students and travelers.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | NYC English LLCnycenglish.nyc HQ: Lehi, UT, United StatesReported employees: 11-50 | Lehi, UT, United States | 11-50 | Exact match | 7 contacts → |
“NYC English is a US-based, industry leader specializing in English language learning, with operations and product development based in Asia.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Wordcraftplaywordcraft.com HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 7 contacts → |
“Wordcraft rapidly teaches vocabulary and reading by gamifying the Latin and Greek roots of English.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Carnegie Speech, LLCcarnegiespeech.com HQ: Pittsburgh, PA, United StatesReported employees: 11-50 | Pittsburgh, PA, United States | 11-50 | Exact match | 6 contacts → |
“Clear communication is a key component of personal and organizational success, customer satisfaction, increasing human capital and the bottom line.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | vocabulary.comvocabulary.com HQ: San Mateo, CA, United StatesReported employees: 11-50 | San Mateo, CA, United States | 11-50 | Exact match | 5 contacts → |
“Browse our curated teacher resources for a better way to teach vocabulary or try our free and fun adaptive activities to boost word learning.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Qtalk Publishing LLCqtalk.com HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 5 contacts → |
“QTALK PUBLISHING LLC, more commonly QTALK, is a language education publishing company, founded by Maurice Hazan in 2008, headquartered in Downtown Manhattan, New York City, United…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Extemporeextemporeapp.com HQ: Minneapolis, MN, United StatesReported employees: 11-50 | Minneapolis, MN, United States | 11-50 | Exact match | 4 contacts → |
“Extempore is a SaaS EdTech platform that allows language teachers to develop students’ reading, writing, listening, speaking, and cultural skills in a target language.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Fluentjoyfluentjoy.com HQ: Beaverton, OR, United StatesReported employees: 1-10 | Beaverton, OR, United States | 1-10 | Exact match | 4 contacts → |
“FluentJoy is a video-based learning and improvement app to learn English.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Hello-Hellohello-hello.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 4 contacts → |
“With over 10 million learners worldwide, Hello-Hello apps are among the top-selling language learning apps in the U.S.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Edulingeduling.org HQ: Pittsburgh, PA, United StatesReported employees: 1-10 | Pittsburgh, PA, United States | 1-10 | Exact match | 3 contacts → |
“Eduling aims to develop real communicative competence in various languages through the Eduling Speak app, language courses, multilingual materials, and other training services.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Wordbudwordbud.com HQ: Austin, TX, United StatesReported employees: 1-10 | Austin, TX, United States | 1-10 | Exact match | 2 contacts → |
“We are building the next generation of mobile apps for language learners around the world.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Ultralingua, INCultralingua.com HQ: Twin Cities, MN, United StatesReported employees: 11-50 | Twin Cities, MN, United States | 11-50 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | Conjuguemosconjuguemos.com HQ: Newton, MA, United StatesReported employees: 1-10 | Newton, MA, United States | 1-10 | Exact match | 2 contacts → |
“Conjuguemos is a company based out of Newton, MA, United States.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Linguamilllinguamill.com HQ: Tampa, FL, United StatesReported employees: 1-10 | Tampa, FL, United States | 1-10 | Exact match | 2 contacts → |
“Linguamill is an AI-powered language learning platform that helps you turn real-life content into vocabulary you'll actually remember.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Clozemasterclozemaster.com HQ: Somerville, MA, United StatesReported employees: 1-10 | Somerville, MA, United States | 1-10 | Exact match | 2 contacts → |
“Clozemaster is game to rapidly expand your vocabulary in another language by filling in the missing word for thousands of sentences in your target language.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Positive Learningpositivelearning.com HQ: Provo, UT, United StatesReported employees: 1-10 | Provo, UT, United States | 1-10 | Exact match | 2 contacts → |
“Positive Learning provides schools with an online learning program that helps their English language learners develop the academic vocabulary they need to be successful.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Sounds Americansoundsamerican.net HQ: Portland, United StatesReported employees: 11-50 | Portland, United States | 11-50 | Exact match | 1 contacts → |
“Sounds American is an EdTech startup that develops content, methodologies, and tools for people who want to improve their pronunciation skills.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Linguathonlinguathon.com HQ: Glendale, CA, United StatesReported employees: 1-10 | Glendale, CA, United States | 1-10 | Exact match | 1 contacts → |
“Linguathon is an engine for learner centered language learning platforms (ESL/ELL, for example, as well as platforms for other languages), allowing learners and teachers alike to…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | ESL With Purpose, LLCeslwithpurpose.com HQ: Tulsa, OK, United StatesReported employees: 1-10 | Tulsa, OK, United States | 1-10 | Exact match | 1 contacts → |
“Message us for any bulk Phrase It or Prep It English game orders.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 68 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Vocabulary builder software companies: dataset insights
October 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
68 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 68 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for vocabulary builder software companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many vocabulary builder software companies did RevenueBase find based in the United States?
The saved snapshot records 68 matching company records, 2,451 tracked contacts and 1,023 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Vocabulary builder software companies by geography
Cite this list
RevenueBase Data Team. Top 25 vocabulary builder software companies based in the United States. Snapshot: October 20, 2026. https://revenuebase.ai/companies/vocabulary-builder-software-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Vocabulary builder software companies based in India
- Vocabulary builder software companies based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States