Company lists · Data refreshed September 2026
Top 25 Api manufacturers based in the United States
RevenueBase identified 64 company matches for api manufacturers associated with the United States as of September 2026 and tracks 3,698 professional contacts across them, including 714 with verified work emails. San Francisco is the largest hub.
This list covers company matches for api manufacturers 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 September 16, 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 api manufacturers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,269 contacts → | ||||
Exact match “Postman is the world’s leading API platform.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 2 | 165 contacts → | ||||
Exact match “Windlass manufactures, supplies and supports a wide range of API certified drilling equipment.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 3 | 81 contacts → | ||||
Exact match “LEADING THE SUPPLY OF HIGH QUALITY GENERIC APIs 21st Century economic, social, technical and regulatory dynamics are dramatically changing the pharmaceutical world making it more…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 4 | 78 contacts → | ||||
Exact match “Valveworks has grown to have the largest, most comprehensive API 6A gate valve product line of any independent in the world.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 5 | 41 contacts → | ||||
Exact match “Layer7 API Security To get maximum value from data, your enterprise needs to seamlessly connect with mobile apps, cloud services and the Internet of Things.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 6 | 32 contacts → | ||||
Exact match “SST Corporation was founded in New York City in 1948, as a brokerage house for industrial chemical supply.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 7 | 25 contacts → | ||||
Exact match “We are an API licensed oilfield instrumentation manufacturer that has proudly served the industry since 1998.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 8 | 23 contacts → | ||||
Exact match “Since 1975, Flavine International has been linking advanced API manufacturers with markets and pharmaceutical companies.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 9 | 22 contacts → | ||||
Exact match “Treblle is an API Intelligence platform that empowers companies looking to connect the dots between APIs and their business development.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 10 | 21 contacts → | ||||
Exact match “JMP Petroleum Technologies is a distributor of API 6A equipment based in Houston, Texas.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 11 | 17 contacts → | ||||
Exact match “apiplatform.io is a trusted digital economy, API strategy & lifecycle partner advancing innovation & productivity.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 12 | 15 contacts → | ||||
Exact match “Nucare API, a division of NuCare Pharmaceuticals, Inc.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 13 | 14 contacts → | ||||
Exact match “Discover, Connect And Manage APIs.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 14 | 14 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 15 | 12 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 16 | 10 contacts → | ||||
Exact match “With Truto, you can whip up any API integration fast using one simple API.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 17 | 8 contacts → | ||||
Exact match “Willow Birch Pharma is a leading supplier of Active Pharmaceutical Ingredients (APIs) to Compounding Pharmacies nationwide.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 18 | 7 contacts → | ||||
Exact match “Description of description” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 19 | 5 contacts → | ||||
Exact match “Generate fast, reliable APIs for any platform.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 20 | 4 contacts → | ||||
Exact match “In an era where APIs are pivotal across industries and solutions, Revenium (formerly HyperCurrent) accelerates digital product delivery, revenue generation, and ROI.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 21 | 3 contacts → | ||||
Exact match “Active Peptide Company is dedicated to providing global cosmetic companies, distributors, and research institutions with a wide selection of high quality peptides and API peptides.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 22 | 2 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 23 | 1 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 24 | 1 contacts → | ||||
Exact match “RepreZen API Studio is the first enterprise-class API design platform, built from the ground up to meet the demands of large-scale integration programs.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 25 | 1 contacts → | ||||
Exact match “Reducing the time it takes to create a SaaS platform from months to minutes.” Recorded in the RevenueBase company graph · Sep 16, 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 “api manufacturers”. 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 64 api manufacturers based in the United States
See the full list, filter by size, metro and specialty, and access 714 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Api manufacturers based in the United States at a glance
As of Sep 16, 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 64 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 “api manufacturers” 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 714 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 September 16, 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 “api manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many api manufacturers are there based in the United States?
RevenueBase identified 64 company matches for api manufacturers associated with the United States as of September 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 city has the most api manufacturers?
San Francisco leads with 9 company records, followed by Houston (3) and Irvine (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 714 professional contacts with verified work emails tracked across these 64 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 September 16, 2026.
Ready to reach these companies? Verified emails and direct dials for all 64 api manufacturers based in the United States. 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.
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Company intelligence · public preview
Top 25 api manufacturers 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 64 matching company records for api manufacturers based in the United States, with 3,698 tracked contacts and 714 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: September 16, 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 api manufacturers 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 |  Postmanpostman.comHQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 2,269 contacts → |
“Postman is the world’s leading API platform.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Windlass Engineers & Serviceswindlassengineers.com HQ: Tomball, TX, United StatesReported employees: 201-500 | Tomball, TX, United States | 201-500 | Exact match | 165 contacts → |
“Windlass manufactures, supplies and supports a wide range of API certified drilling equipment.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Chemwerth INCchemwerth.com HQ: Woodbridge, CT, United StatesReported employees: 51-200 | Woodbridge, CT, United States | 51-200 | Exact match | 81 contacts → |
“LEADING THE SUPPLY OF HIGH QUALITY GENERIC APIs 21st Century economic, social, technical and regulatory dynamics are dramatically changing the pharmaceutical world making it more…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Valveworks USAvalveworksusa.us HQ: Bossier City, LA, United StatesReported employees: 201-500 | Bossier City, LA, United States | 201-500 | Exact match | 78 contacts → |
“Valveworks has grown to have the largest, most comprehensive API 6A gate valve product line of any independent in the world.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Layer7 API Securitybroadcom.comHQ: San Jose, CA, United StatesReported employees: Not recorded | San Jose, CA, United States | Not recorded | Exact match | 41 contacts → |
“Layer7 API Security To get maximum value from data, your enterprise needs to seamlessly connect with mobile apps, cloud services and the Internet of Things.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | SST Corporationsst-corp.com HQ: Fairfield, NJ, United StatesReported employees: 11-50 | Fairfield, NJ, United States | 11-50 | Exact match | 32 contacts → |
“SST Corporation was founded in New York City in 1948, as a brokerage house for industrial chemical supply.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Matherne Instrumentationmatherneis.comHQ: Houma, LA, United StatesReported employees: 51-200 | Houma, LA, United States | 51-200 | Exact match | 25 contacts → |
“We are an API licensed oilfield instrumentation manufacturer that has proudly served the industry since 1998.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Flavineflavine.com HQ: Paramus, NJ, United StatesReported employees: 11-50 | Paramus, NJ, United States | 11-50 | Exact match | 23 contacts → |
“Since 1975, Flavine International has been linking advanced API manufacturers with markets and pharmaceutical companies.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Treblletreblle.comHQ: Wilmington, DE, United StatesReported employees: 11-50 | Wilmington, DE, United States | 11-50 | Exact match | 22 contacts → |
“Treblle is an API Intelligence platform that empowers companies looking to connect the dots between APIs and their business development.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | JMP Petroleum Technologies, INCjmp-us.com HQ: Humble, TX, United StatesReported employees: 11-50 | Humble, TX, United States | 11-50 | Exact match | 21 contacts → |
“JMP Petroleum Technologies is a distributor of API 6A equipment based in Houston, Texas.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  API Platform INCapiplatform.ioHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 17 contacts → |
“apiplatform.io is a trusted digital economy, API strategy & lifecycle partner advancing innovation & productivity.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Nucare APInucareapi.com HQ: Orange, CA, United StatesReported employees: 51-200 | Orange, CA, United States | 51-200 | Exact match | 15 contacts → |
“Nucare API, a division of NuCare Pharmaceuticals, Inc.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  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 · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | B&b Pharmaceuticals, INCbbpharm.net HQ: Englewood, CO, United StatesReported employees: 11-50 | Englewood, CO, United States | 11-50 | Exact match | 14 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | Long Industrieslongindustries.us HQ: Monrovia, CA, United StatesReported employees: 51-200 | Monrovia, CA, United States | 51-200 | Exact match | 12 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 |  TRUTOtruto.oneHQ: Beaverton, OR, United StatesReported employees: 1-10 | Beaverton, OR, United States | 1-10 | Exact match | 10 contacts → |
“With Truto, you can whip up any API integration fast using one simple API.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Willow Birch Pharmawillowbirch.com HQ: Taylor, MS, United StatesReported employees: 1-10 | Taylor, MS, United States | 1-10 | Exact match | 8 contacts → |
“Willow Birch Pharma is a leading supplier of Active Pharmaceutical Ingredients (APIs) to Compounding Pharmacies nationwide.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Woodco USAwoodcousa.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 7 contacts → |
“Description of description” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Integuru YC W24integuru.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 5 contacts → |
“Generate fast, reliable APIs for any platform.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Reveniumrevenium.io HQ: Herndon, VA, United StatesReported employees: 11-50 | Herndon, VA, United States | 11-50 | Exact match | 4 contacts → |
“In an era where APIs are pivotal across industries and solutions, Revenium (formerly HyperCurrent) accelerates digital product delivery, revenue generation, and ROI.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Active Peptide Companyactivepeptide.comHQ: Cambridge, MA, United StatesReported employees: 11-50 | Cambridge, MA, United States | 11-50 | Exact match | 3 contacts → |
“Active Peptide Company is dedicated to providing global cosmetic companies, distributors, and research institutions with a wide selection of high quality peptides and API peptides.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Apicore US Limited Liability Companyapicore.comHQ: Somerset, NJ, United StatesReported employees: 1-10 | Somerset, NJ, United States | 1-10 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 |  Openflame INCopenfla.meHQ: New York, NY, United StatesReported employees: 1-10 | New York, NY, United States | 1-10 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 24 |  Reprezenreprezen.comHQ: Dobbs Ferry, NY, United StatesReported employees: 1-10 | Dobbs Ferry, NY, United States | 1-10 | Exact match | 1 contacts → |
“RepreZen API Studio is the first enterprise-class API design platform, built from the ground up to meet the demands of large-scale integration programs.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Scaffoldlyscaffold.lyHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“Reducing the time it takes to create a SaaS platform from months to minutes.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 64 company matches
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Api manufacturers: dataset insights
September 16, 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
64 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 64 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: September 16, 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 api manufacturers?
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 api manufacturers did RevenueBase find based in the United States?
The saved snapshot records 64 matching company records, 3,698 tracked contacts and 714 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: September 16, 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
Api manufacturers by geography
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 api manufacturers based in the United States. Snapshot: September 16, 2026. https://revenuebase.ai/companies/api-manufacturers/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
- Api manufacturers based in Hyderabad, India
- Api manufacturers based in Mumbai, India
- Api manufacturers based in India
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
Company intelligence · public preview
Top 25 api manufacturers based in the United States
RevenueBase records 64 matching company records for api manufacturers based in the United States, with 3,698 tracked contacts and 714 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: September 16, 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 api manufacturers 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 | Postmanpostman.com HQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 2,269 contacts → |
“Postman is the world’s leading API platform.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Windlass Engineers & Serviceswindlassengineers.com HQ: Tomball, TX, United StatesReported employees: 201-500 | Tomball, TX, United States | 201-500 | Exact match | 165 contacts → |
“Windlass manufactures, supplies and supports a wide range of API certified drilling equipment.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Chemwerth INCchemwerth.com HQ: Woodbridge, CT, United StatesReported employees: 51-200 | Woodbridge, CT, United States | 51-200 | Exact match | 81 contacts → |
“LEADING THE SUPPLY OF HIGH QUALITY GENERIC APIs 21st Century economic, social, technical and regulatory dynamics are dramatically changing the pharmaceutical world making it more…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Valveworks USAvalveworksusa.us HQ: Bossier City, LA, United StatesReported employees: 201-500 | Bossier City, LA, United States | 201-500 | Exact match | 78 contacts → |
“Valveworks has grown to have the largest, most comprehensive API 6A gate valve product line of any independent in the world.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Layer7 API Securitybroadcom.com HQ: San Jose, CA, United StatesReported employees: Not recorded | San Jose, CA, United States | Not recorded | Exact match | 41 contacts → |
“Layer7 API Security To get maximum value from data, your enterprise needs to seamlessly connect with mobile apps, cloud services and the Internet of Things.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | SST Corporationsst-corp.com HQ: Fairfield, NJ, United StatesReported employees: 11-50 | Fairfield, NJ, United States | 11-50 | Exact match | 32 contacts → |
“SST Corporation was founded in New York City in 1948, as a brokerage house for industrial chemical supply.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Matherne Instrumentationmatherneis.com HQ: Houma, LA, United StatesReported employees: 51-200 | Houma, LA, United States | 51-200 | Exact match | 25 contacts → |
“We are an API licensed oilfield instrumentation manufacturer that has proudly served the industry since 1998.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Flavineflavine.com HQ: Paramus, NJ, United StatesReported employees: 11-50 | Paramus, NJ, United States | 11-50 | Exact match | 23 contacts → |
“Since 1975, Flavine International has been linking advanced API manufacturers with markets and pharmaceutical companies.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Treblletreblle.com HQ: Wilmington, DE, United StatesReported employees: 11-50 | Wilmington, DE, United States | 11-50 | Exact match | 22 contacts → |
“Treblle is an API Intelligence platform that empowers companies looking to connect the dots between APIs and their business development.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | JMP Petroleum Technologies, INCjmp-us.com HQ: Humble, TX, United StatesReported employees: 11-50 | Humble, TX, United States | 11-50 | Exact match | 21 contacts → |
“JMP Petroleum Technologies is a distributor of API 6A equipment based in Houston, Texas.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | API Platform INCapiplatform.io HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 17 contacts → |
“apiplatform.io is a trusted digital economy, API strategy & lifecycle partner advancing innovation & productivity.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Nucare APInucareapi.com HQ: Orange, CA, United StatesReported employees: 51-200 | Orange, CA, United States | 51-200 | Exact match | 15 contacts → |
“Nucare API, a division of NuCare Pharmaceuticals, Inc.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | 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 · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | B&b Pharmaceuticals, INCbbpharm.net HQ: Englewood, CO, United StatesReported employees: 11-50 | Englewood, CO, United States | 11-50 | Exact match | 14 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | Long Industrieslongindustries.us HQ: Monrovia, CA, United StatesReported employees: 51-200 | Monrovia, CA, United States | 51-200 | Exact match | 12 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | TRUTOtruto.one HQ: Beaverton, OR, United StatesReported employees: 1-10 | Beaverton, OR, United States | 1-10 | Exact match | 10 contacts → |
“With Truto, you can whip up any API integration fast using one simple API.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Willow Birch Pharmawillowbirch.com HQ: Taylor, MS, United StatesReported employees: 1-10 | Taylor, MS, United States | 1-10 | Exact match | 8 contacts → |
“Willow Birch Pharma is a leading supplier of Active Pharmaceutical Ingredients (APIs) to Compounding Pharmacies nationwide.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Woodco USAwoodcousa.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 7 contacts → |
“Description of description” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Integuru YC W24integuru.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 5 contacts → |
“Generate fast, reliable APIs for any platform.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Reveniumrevenium.io HQ: Herndon, VA, United StatesReported employees: 11-50 | Herndon, VA, United States | 11-50 | Exact match | 4 contacts → |
“In an era where APIs are pivotal across industries and solutions, Revenium (formerly HyperCurrent) accelerates digital product delivery, revenue generation, and ROI.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Active Peptide Companyactivepeptide.com HQ: Cambridge, MA, United StatesReported employees: 11-50 | Cambridge, MA, United States | 11-50 | Exact match | 3 contacts → |
“Active Peptide Company is dedicated to providing global cosmetic companies, distributors, and research institutions with a wide selection of high quality peptides and API peptides.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Apicore US Limited Liability Companyapicore.com HQ: Somerset, NJ, United StatesReported employees: 1-10 | Somerset, NJ, United States | 1-10 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Openflame INCopenfla.me HQ: New York, NY, United StatesReported employees: 1-10 | New York, NY, United States | 1-10 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 24 | Reprezenreprezen.com HQ: Dobbs Ferry, NY, United StatesReported employees: 1-10 | Dobbs Ferry, NY, United States | 1-10 | Exact match | 1 contacts → |
“RepreZen API Studio is the first enterprise-class API design platform, built from the ground up to meet the demands of large-scale integration programs.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Scaffoldlyscaffold.ly HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“Reducing the time it takes to create a SaaS platform from months to minutes.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 64 company matches
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Api manufacturers: dataset insights
September 16, 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
64 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 64 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: September 16, 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 api manufacturers?
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 api manufacturers did RevenueBase find based in the United States?
The saved snapshot records 64 matching company records, 3,698 tracked contacts and 714 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: September 16, 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 api manufacturers based in the United States. Snapshot: September 16, 2026. https://revenuebase.ai/companies/api-manufacturers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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