Company lists · Data refreshed November 2026

Top 25 Api development services worldwide

RevenueBase identified 158 company matches for api development services worldwide as of November 2026 and tracks 3,625 professional contacts across them, including 1,018 with verified work emails. The United States is the largest market and San Francisco the largest hub.

This list covers company matches for api development services 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 api development services 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
158Companies
3,625Contacts tracked
1,018Verified emails
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The 25 largest api development services worldwide

Ranked by team size
Top 25 of 158 company matches for api development services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 2026501-1,0002,512 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
2Exact matchBertrange, LuxembourgHQ recorded Nov 6, 2026201-500187 contacts →

Exact match

“Located in Luxembourg, France, Germany, Italy, Switzerland, Portugal, Costa Rica, Shanghaï and Hong Kong, Cap4 Lab helps customers unlock their potential in the development of new…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchKorba, IndiaHQ recorded Nov 6, 202651-20086 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
4Exact matchAustin, TX, United StatesHQ recorded Nov 6, 202611-5064 contacts →

Exact match

“At last, API docs you can be proud of!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchGetafe, MexicoHQ recorded Nov 6, 202651-20060 contacts →

Exact match

“Startup specialiced in APIs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMississauga, ON, CanadaHQ recorded Nov 6, 202651-20056 contacts →

Exact match

“AIM is a specialized company providing a wide range of API management solutions and services to ensure optimal performance and security for businesses.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchAmsterdam, NetherlandsHQ recorded Nov 6, 202611-5031 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
8Exact matchWilmington, DE, United StatesHQ recorded Nov 6, 202611-5020 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 · Nov 6, 2026 · View company records in RevenueBase
9Exact matchGeneva, SwitzerlandHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“SynergySoft is a Swiss integration consultancy based in Geneva, helping organizations connect applications, data, and AI through modern API-led architectures.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchSan Francisco, United StatesHQ recorded Nov 6, 202611-5015 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
11Exact matchToronto, ON, CanadaHQ recorded Nov 6, 202611-5015 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
12Exact matchRemote, United StatesHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“Discover, Connect And Manage APIs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchDwarka Sector 15, IndiaHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“BOS Center Pvt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchŠenov U Nového Jičína, Czech RepublicHQ recorded Nov 6, 20261-1012 contacts →

Exact match

“Idealine is a senior team building SaaS and business applications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSydney, AustraliaHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“We are Master Builders of Software.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchDammam, Saudi ArabiaHQ recorded Nov 6, 202611-5010 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
17Exact matchFortitude Valley, AustraliaHQ recorded Nov 6, 20261-109 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
18Exact matchHong Kong, ArmeniaHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Founded in 2015, beNovelty stands at the forefront of API and Agentic AI innovation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchFrisco, TX, United StatesHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Integration | APIs | Automation”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 20261-105 contacts →

Exact match

“APIs for enterprise portals that don't have one.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Create better API connections - We help forward-thinking trading organisations to create and manage better API connections with their trading counter-parties, through a unique…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBrookline, MA, United StatesHQ recorded Nov 6, 20261-104 contacts →

Exact match

“The API Guys provides high-quality, affordable API integrations and custom programming to businesses so that they can have their data just the way they want it.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchErie, CO, United StatesHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Fine Mountain Consulting wants to be a partner in your success.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchGothenburg, SwedenHQ recorded Nov 6, 20261-102 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchUnited StatesHQ recorded Nov 6, 20261-102 contacts →

Exact match

“API dev platform for developers, DevOps and SREs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 158 api development services worldwide

See the full list, filter by size, metro and specialty, and access 1,018 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Api development services worldwide at a glance

As of Nov 6, 2026
28.1%Verified-email coverage
22.9Average contacts per company
1-10Median size (employees)
3.2%Largest-city concentration · San Francisco
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
102
11-50
40
51-200
11
201-500
1
501-1,000
1
10001+
3

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 api development services are linked below.
What qualifies
Company records worldwide whose business descriptions match “api development services” 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 1,018 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.

Api development services by location

1 lists · largest first

Every Api development services 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 “api development services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many api development services are there worldwide?

RevenueBase identified 158 company matches for api development services 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 api development services?

The United States leads with 36 companies. Every api development services list by country and city is linked on this page.

Which city has the most api development services?

San Francisco leads with 5 company records, followed by Berlin (4) and New York (4).

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 1,018 professional contacts with verified work emails tracked across these 158 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.

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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.