Company lists · Data refreshed November 2026
Top 25 Application programming interface companies worldwide
RevenueBase identified 175 company matches for application programming interface companies worldwide as of November 2026 and tracks 4,414 professional contacts across them, including 1,388 with verified work emails. The United States is the largest market and San Francisco the largest hub.
This list covers company matches for application programming interface companies worldwide, 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 November 6, 2026. Country and city lists for application programming interface companies follow the table.
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 application programming interface companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,512 contacts → | ||||
Exact match “Postman is the world’s leading API platform.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 638 contacts → | ||||
Exact match “Sensedia supports companies to become more digital, connected and open through a technology platform and expertise in APIs and Microservices.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 86 contacts → | ||||
Exact match “Company Profile- General Introduction Of Company ConstaCloud Pvt.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 84 contacts → | ||||
Exact match “Reachware is a leading integration platform in the region that allows systems and data to connect and flow seamlessly.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 38 contacts → | ||||
Exact match “Toro makes accessible enterprise application integration software.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 31 contacts → | ||||
Exact match “ApyHub is the fastest-growing API catalogs in the AI space.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 30 contacts → | ||||
Exact match “Smartfastpay is a technology company focused on API-based solutions that connect people and businesses through smart, scalable, and secure integrations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 29 contacts → | ||||
Exact match “At ShuffleLabs, we pride ourselves on being your trusted partner for integration solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 24 contacts → | ||||
Exact match “For the teams still importing and exporting data between systems, we take a people-first approach, dig into your unique processes, and build automated solutions so you can ditch…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 22 contacts → | ||||
Exact match “Openapi.com is the largest API marketplace in Europe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 21 contacts → | ||||
Exact match “Apideck eliminates the complexity of integrations with a single real-time API that connects to 190+ platforms across CRM, Accounting, HRIS, File Storage, and eCommerce without the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 21 contacts → | ||||
Exact match “Neolab is a software company based in Ljubljana, Slovenia, specialized in development of business oriented information systems, API development, data synchronization and BI…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 15 contacts → | ||||
Exact match “Maesn is the Unified API for ERP and accounting.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 15 contacts → | ||||
Exact match “apiplatform.io is a trusted digital economy, API strategy & lifecycle partner advancing innovation & productivity.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 15 contacts → | ||||
Exact match “Digital Transformation experts in securing Identities, devices, and services by applying industry best practices, solution patterns, and best of breed solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 14 contacts → | ||||
Exact match “SuperAPI built by developers, for developers” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 14 contacts → | ||||
Exact match “Discover, Connect And Manage APIs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 12 contacts → | ||||
Exact match “My Solution Connect, éditeur de la solution Open-Flux, dispose d’une expertise issue du monde de la gestion et une connaissance approfondie de l’écosystème des éditeurs de gestion…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 12 contacts → | ||||
Exact match “With Truto, you can whip up any API integration fast using one simple API.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 10 contacts → | ||||
Exact match “ADB World has the expertise to provide application integration and development services that link your applications, third-party applications and web sites via standard or custom…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 9 contacts → | ||||
Exact match “Halo Connect provides RESTful APIs for software providers to connect seamlessly with on-premise data sources.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 8 contacts → | ||||
Exact match “CreatanAPI is the company behind PromoLink, the end-to-end platform that manages your entire promo workflow.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 7 contacts → | ||||
Exact match “NE2NE is the world's leading "Any to Any" Integration Platform that allows businesses of all sizes to integrate with their counterparts in the quickest and easiest way possible.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 6 contacts → | ||||
Exact match “Unified.to is the #1 unified API+MCP platform for AI applications.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 6 contacts → | ||||
Exact match “BackboneAI builds frictionless data networks through intercompany automation, a completely new category of automation.” Recorded in the RevenueBase company graph · Nov 6, 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 “application programming interface 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 175 application programming interface companies worldwide
See the full list, filter by size, metro and specialty, and access 1,388 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Application programming interface companies worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for application programming interface companies are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “application programming interface 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. 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 1,388 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 November 6, 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.
Application programming interface companies by location
1 lists · largest firstEvery Application programming interface companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 “application programming interface companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many application programming interface companies are there worldwide?
RevenueBase identified 175 company matches for application programming interface companies worldwide as of November 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?
Postman tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most application programming interface companies?
The United States leads with 43 companies. Every application programming interface companies list by country and city is linked on this page.
Which city has the most application programming interface companies?
San Francisco leads with 9 company records, followed by Sao Paulo (4) and Bangalore (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 1,388 professional contacts with verified work emails tracked across these 175 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 175 application programming interface companies worldwide. Start with a free account, no credit card.
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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
Company intelligence · public preview
Top 25 application programming interface companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 175 matching company records for application programming interface companies worldwide, with 4,414 tracked contacts and 1,388 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: November 6, 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 application programming interface companies worldwide
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 |  Postmanpostman.comHQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 2,512 contacts → |
“Postman is the world’s leading API platform.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Sensediasensedia.comHQ: Campinas, BrazilReported employees: 501-1,000 | Campinas, Brazil | 501-1,000 | Exact match | 638 contacts → |
“Sensedia supports companies to become more digital, connected and open through a technology platform and expertise in APIs and Microservices.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Constacloud Private Limitedconstacloud.comHQ: Korba, IndiaReported employees: 51-200 | Korba, India | 51-200 | Exact match | 86 contacts → |
“Company Profile- General Introduction Of Company ConstaCloud Pvt.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Reachwarereachware.comHQ: Riyadh, Saudi ArabiaReported employees: 11-50 | Riyadh, Saudi Arabia | 11-50 | Exact match | 84 contacts → |
“Reachware is a leading integration platform in the region that allows systems and data to connect and flow seamlessly.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Toro Cloudtorocloud.comHQ: North Sydney, AustraliaReported employees: 11-50 | North Sydney, Australia | 11-50 | Exact match | 38 contacts → |
“Toro makes accessible enterprise application integration software.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Apyhubapyhub.comHQ: Amsterdam, NetherlandsReported employees: 11-50 | Amsterdam, Netherlands | 11-50 | Exact match | 31 contacts → |
“ApyHub is the fastest-growing API catalogs in the AI space.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Smartfastpaysmartfastpay.comHQ: Itajaí, BrazilReported employees: 51-200 | Itajaí, Brazil | 51-200 | Exact match | 30 contacts → |
“Smartfastpay is a technology company focused on API-based solutions that connect people and businesses through smart, scalable, and secure integrations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Shufflelabsshufflelabs.comHQ: Herndon, VA, United StatesReported employees: 11-50 | Herndon, VA, United States | 11-50 | Exact match | 29 contacts → |
“At ShuffleLabs, we pride ourselves on being your trusted partner for integration solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Venn Technologyvenntechnology.comHQ: Southlake, TX, United StatesReported employees: 11-50 | Southlake, TX, United States | 11-50 | Exact match | 24 contacts → |
“For the teams still importing and exporting data between systems, we take a people-first approach, dig into your unique processes, and build automated solutions so you can ditch…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Openapiopenapi.comHQ: Rome, ItalyReported employees: 11-50 | Rome, Italy | 11-50 | Exact match | 22 contacts → |
“Openapi.com is the largest API marketplace in Europe.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Apideckapideck.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 21 contacts → |
“Apideck eliminates the complexity of integrations with a single real-time API that connects to 190+ platforms across CRM, Accounting, HRIS, File Storage, and eCommerce without the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Neolabneolab.siHQ: Ljubljana, SloveniaReported employees: 1-10 | Ljubljana, Slovenia | 1-10 | Exact match | 21 contacts → |
“Neolab is a software company based in Ljubljana, Slovenia, specialized in development of business oriented information systems, API development, data synchronization and BI…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  MAESNmaesn.comHQ: Düsseldorf, GermanyReported employees: 11-50 | Düsseldorf, Germany | 11-50 | Exact match | 15 contacts → |
“Maesn is the Unified API for ERP and accounting.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  API Platform INCapiplatform.ioHQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 15 contacts → |
“apiplatform.io is a trusted digital economy, API strategy & lifecycle partner advancing innovation & productivity.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Solsyssolsys.caHQ: Toronto, ON, CanadaReported employees: 11-50 | Toronto, ON, Canada | 11-50 | Exact match | 15 contacts → |
“Digital Transformation experts in securing Identities, devices, and services by applying industry best practices, solution patterns, and best of breed solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Superapisuperapi.com.auHQ: Melbourne, AustraliaReported employees: 1-10 | Melbourne, Australia | 1-10 | Exact match | 14 contacts → |
“SuperAPI built by developers, for developers” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Zyla Labszylalabs.comHQ: Remote, United StatesReported employees: 11-50 | Remote, United States | 11-50 | Exact match | 14 contacts → |
“Discover, Connect And Manage APIs.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Mysolutionconnectmysolutionconnect.comHQ: Rouen, FranceReported employees: 1-10 | Rouen, France | 1-10 | Exact match | 12 contacts → |
“My Solution Connect, éditeur de la solution Open-Flux, dispose d’une expertise issue du monde de la gestion et une connaissance approfondie de l’écosystème des éditeurs de gestion…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  TRUTOtruto.oneHQ: Beaverton, OR, United StatesReported employees: 1-10 | Beaverton, OR, United States | 1-10 | Exact match | 12 contacts → |
“With Truto, you can whip up any API integration fast using one simple API.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  ADB Worldadbworld.comHQ: Dammam, Saudi ArabiaReported employees: 11-50 | Dammam, Saudi Arabia | 11-50 | Exact match | 10 contacts → |
“ADB World has the expertise to provide application integration and development services that link your applications, third-party applications and web sites via standard or custom…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Halo Connecthaloconnect.ioHQ: Fortitude Valley, AustraliaReported employees: 1-10 | Fortitude Valley, Australia | 1-10 | Exact match | 9 contacts → |
“Halo Connect provides RESTful APIs for software providers to connect seamlessly with on-premise data sources.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Createanapicreateanapi.comHQ: San Tan Valley, AZ, United StatesReported employees: 11-50 | San Tan Valley, AZ, United States | 11-50 | Exact match | 8 contacts → |
“CreatanAPI is the company behind PromoLink, the end-to-end platform that manages your entire promo workflow.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Ne2nene2ne.comHQ: Cleveland, OH, United StatesReported employees: 11-50 | Cleveland, OH, United States | 11-50 | Exact match | 7 contacts → |
“NE2NE is the world's leading "Any to Any" Integration Platform that allows businesses of all sizes to integrate with their counterparts in the quickest and easiest way possible.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Unified TS S23unified.toHQ: Toronto, ON, CanadaReported employees: 1-10 | Toronto, ON, Canada | 1-10 | Exact match | 6 contacts → |
“Unified.to is the #1 unified API+MCP platform for AI applications.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Backboneaibackbone.aiHQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 6 contacts → |
“BackboneAI builds frictionless data networks through intercompany automation, a completely new category of automation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 175 company matches
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Application programming interface companies: dataset insights
November 6, 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
174 records in the displayed employee bands.
1 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 175 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: November 6, 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 ↗
Application programming interface companies by location
1 lists · largest firstEvery Application programming interface companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for application programming interface 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 application programming interface companies did RevenueBase find worldwide?
The saved snapshot records 175 matching company records, 4,414 tracked contacts and 1,388 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: November 6, 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.
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Cite this list
RevenueBase Data Team. Top 25 application programming interface companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/application-programming-interface-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 application programming interface companies worldwide
RevenueBase records 175 matching company records for application programming interface companies worldwide, with 4,414 tracked contacts and 1,388 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: November 6, 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 application programming interface companies worldwide
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 | Postmanpostman.com HQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 2,512 contacts → |
“Postman is the world’s leading API platform.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Sensediasensedia.com HQ: Campinas, BrazilReported employees: 501-1,000 | Campinas, Brazil | 501-1,000 | Exact match | 638 contacts → |
“Sensedia supports companies to become more digital, connected and open through a technology platform and expertise in APIs and Microservices.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Constacloud Private Limitedconstacloud.com HQ: Korba, IndiaReported employees: 51-200 | Korba, India | 51-200 | Exact match | 86 contacts → |
“Company Profile- General Introduction Of Company ConstaCloud Pvt.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Reachwarereachware.com HQ: Riyadh, Saudi ArabiaReported employees: 11-50 | Riyadh, Saudi Arabia | 11-50 | Exact match | 84 contacts → |
“Reachware is a leading integration platform in the region that allows systems and data to connect and flow seamlessly.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Toro Cloudtorocloud.com HQ: North Sydney, AustraliaReported employees: 11-50 | North Sydney, Australia | 11-50 | Exact match | 38 contacts → |
“Toro makes accessible enterprise application integration software.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Apyhubapyhub.com HQ: Amsterdam, NetherlandsReported employees: 11-50 | Amsterdam, Netherlands | 11-50 | Exact match | 31 contacts → |
“ApyHub is the fastest-growing API catalogs in the AI space.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Smartfastpaysmartfastpay.com HQ: Itajaí, BrazilReported employees: 51-200 | Itajaí, Brazil | 51-200 | Exact match | 30 contacts → |
“Smartfastpay is a technology company focused on API-based solutions that connect people and businesses through smart, scalable, and secure integrations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Shufflelabsshufflelabs.com HQ: Herndon, VA, United StatesReported employees: 11-50 | Herndon, VA, United States | 11-50 | Exact match | 29 contacts → |
“At ShuffleLabs, we pride ourselves on being your trusted partner for integration solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Venn Technologyvenntechnology.com HQ: Southlake, TX, United StatesReported employees: 11-50 | Southlake, TX, United States | 11-50 | Exact match | 24 contacts → |
“For the teams still importing and exporting data between systems, we take a people-first approach, dig into your unique processes, and build automated solutions so you can ditch…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Openapiopenapi.com HQ: Rome, ItalyReported employees: 11-50 | Rome, Italy | 11-50 | Exact match | 22 contacts → |
“Openapi.com is the largest API marketplace in Europe.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Apideckapideck.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 21 contacts → |
“Apideck eliminates the complexity of integrations with a single real-time API that connects to 190+ platforms across CRM, Accounting, HRIS, File Storage, and eCommerce without the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Neolabneolab.si HQ: Ljubljana, SloveniaReported employees: 1-10 | Ljubljana, Slovenia | 1-10 | Exact match | 21 contacts → |
“Neolab is a software company based in Ljubljana, Slovenia, specialized in development of business oriented information systems, API development, data synchronization and BI…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | MAESNmaesn.com HQ: Düsseldorf, GermanyReported employees: 11-50 | Düsseldorf, Germany | 11-50 | Exact match | 15 contacts → |
“Maesn is the Unified API for ERP and accounting.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | API Platform INCapiplatform.io HQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 15 contacts → |
“apiplatform.io is a trusted digital economy, API strategy & lifecycle partner advancing innovation & productivity.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Solsyssolsys.ca HQ: Toronto, ON, CanadaReported employees: 11-50 | Toronto, ON, Canada | 11-50 | Exact match | 15 contacts → |
“Digital Transformation experts in securing Identities, devices, and services by applying industry best practices, solution patterns, and best of breed solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Superapisuperapi.com.au HQ: Melbourne, AustraliaReported employees: 1-10 | Melbourne, Australia | 1-10 | Exact match | 14 contacts → |
“SuperAPI built by developers, for developers” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Zyla Labszylalabs.com HQ: Remote, United StatesReported employees: 11-50 | Remote, United States | 11-50 | Exact match | 14 contacts → |
“Discover, Connect And Manage APIs.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Mysolutionconnectmysolutionconnect.com HQ: Rouen, FranceReported employees: 1-10 | Rouen, France | 1-10 | Exact match | 12 contacts → |
“My Solution Connect, éditeur de la solution Open-Flux, dispose d’une expertise issue du monde de la gestion et une connaissance approfondie de l’écosystème des éditeurs de gestion…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | TRUTOtruto.one HQ: Beaverton, OR, United StatesReported employees: 1-10 | Beaverton, OR, United States | 1-10 | Exact match | 12 contacts → |
“With Truto, you can whip up any API integration fast using one simple API.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | ADB Worldadbworld.com HQ: Dammam, Saudi ArabiaReported employees: 11-50 | Dammam, Saudi Arabia | 11-50 | Exact match | 10 contacts → |
“ADB World has the expertise to provide application integration and development services that link your applications, third-party applications and web sites via standard or custom…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Halo Connecthaloconnect.io HQ: Fortitude Valley, AustraliaReported employees: 1-10 | Fortitude Valley, Australia | 1-10 | Exact match | 9 contacts → |
“Halo Connect provides RESTful APIs for software providers to connect seamlessly with on-premise data sources.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Createanapicreateanapi.com HQ: San Tan Valley, AZ, United StatesReported employees: 11-50 | San Tan Valley, AZ, United States | 11-50 | Exact match | 8 contacts → |
“CreatanAPI is the company behind PromoLink, the end-to-end platform that manages your entire promo workflow.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Ne2nene2ne.com HQ: Cleveland, OH, United StatesReported employees: 11-50 | Cleveland, OH, United States | 11-50 | Exact match | 7 contacts → |
“NE2NE is the world's leading "Any to Any" Integration Platform that allows businesses of all sizes to integrate with their counterparts in the quickest and easiest way possible.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Unified TS S23unified.to HQ: Toronto, ON, CanadaReported employees: 1-10 | Toronto, ON, Canada | 1-10 | Exact match | 6 contacts → |
“Unified.to is the #1 unified API+MCP platform for AI applications.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Backboneaibackbone.ai HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 6 contacts → |
“BackboneAI builds frictionless data networks through intercompany automation, a completely new category of automation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 175 company matches
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Application programming interface companies: dataset insights
November 6, 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
174 records in the displayed employee bands.
1 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 175 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: November 6, 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 ↗
Application programming interface companies by location
1 lists · largest firstEvery Application programming interface companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for application programming interface 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 application programming interface companies did RevenueBase find worldwide?
The saved snapshot records 175 matching company records, 4,414 tracked contacts and 1,388 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: November 6, 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.
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Cite this list
RevenueBase Data Team. Top 25 application programming interface companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/application-programming-interface-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗