| # | Company | Location | Employees | Total Funding | Last Round | Last Funded |
|---|---|---|---|---|---|---|
| 1 |
Deepgram
Deepgram provides a voice artificial intelligence platform for speech-to-text, t…
|
San Francisco | — | $215.9M | Series C | 2026-01-13 |
| 2 |
ElevenLabs
ElevenLabs is an AI company that offers tools for speech synthesis, voice clonin…
|
New York | — | $781.0M | Series D | 2026-02-04 |
| 3 |
Privy
Privy provides infrastructure for building on crypto rails, allowing for secure …
|
New York | 11 - 50 | $41.3M | Series Unknown | 2025-03-19 |
| 4 |
LangChain
LangChain is a platform that provides open-source frameworks and tools for engin…
|
San Francisco | 101 - 250 | $160.0M | Series B | 2025-10-20 |
| 5 |
Kong
Kong is a cloud-native platform that powers API-led connectivity for developer p…
|
San Francisco | 501 - 1K | $344.1M | Series E | 2024-11-19 |
| 6 |
Edera
Edera is an enterprise infrastructure security company that offers secure-by-des…
|
Seattle | 11 - 50 | $20.0M | Series A | 2025-02-25 |
| 7 |
Alpaca
Alpaca is a financial system platform that allows developers and businesses to b…
|
Tokyo | 251 - 500 | $328.8M | Series D | 2026-01-14 |
| 8 |
Fern
Start with an API spec. Generate SDKs in multiple languages and API documentatio…
|
New York | 11 - 50 | $22.3M | Series A | 2025-04-10 |
| 9 |
Parallel
Parallel develops systems for AIs to efficiently interact with the web.
|
Palo Alto | 11 - 50 | $160.0M | Series A | 2025-11-12 |
| 10 |
Salt Security
Salt Security provides an API protection platform designed to prevent attacks by…
|
Palo Alto | 101 - 250 | $271.0M | Series Unknown | 2022-09-19 |
| 11 |
Runware
Runware provides an API platform that enables developers and businesses to integ…
|
London | 11 - 50 | $66.0M | Series A | 2025-12-11 |
| 12 |
Stream
Stream builds chat and feeds for applications at scale in a fraction of the time…
|
Boulder | 101 - 250 | $58.1M | Series B | 2021-03-04 |
| 13 |
Paragon
Paragon is an embedded integration platform for SaaS apps, enabling companies to…
|
Los Angeles | 11 - 50 | $21.2M | Series Unknown | 2024-10-29 |
| 14 |
Solo.io
Solo.io delivers cloud-native API and service mesh solutions, built on Istio and…
|
Cambridge | 101 - 250 | $171.5M | Series C | 2021-10-07 |
| 15 |
Firecrawl
Firecrawl is an API service that designs structured data for integration.
|
San Francisco | 1 - 10 | $14.5M | Series A | 2025-08-19 |
| 16 |
Arcade.dev
Arcade.dev helps AI Agents securely connect to APIs, data, and other systems
|
South San Francisco | 11 - 50 | $12.0M | Seed | 2025-03-18 |
| 17 |
OPSWAT
OPSWAT is a Critical Infrastructure Protection CIP Cybersecurity for ICS and OT …
|
Tampa | 501 - 1K | $125.0M | Private Equity | 2021-03-31 |
| 18 |
SmartBear
SmartBear is a developer of enterprise-class software development and testing to…
|
Somerville | 501 - 1K | $25.0M | Private Equity | 2020-10-21 |
| 19 |
LlamaIndex
LlamaIndex enables enterprises to build AI Knowledge Assistants, improving data …
|
San Francisco | 1 - 10 | $29.5M | Non Equity Assistance | 2025-10-08 |
| 20 |
Reducto
Reducto is an AI-driven API that specializes in converting unstructured document…
|
San Francisco | 11 - 50 | $108.4M | Series B | 2025-10-14 |
| 21 |
Mondu
Mondu is a fintech company that offers B2B payment services.
|
Berlin | 101 - 250 | $239.5M | Debt Financing | 2025-12-10 |
| 22 |
Kaltura
Kaltura develops video SaaS solutions for enterprises of all industries.
|
New York | 501 - 1K | $166.1M | Series F | 2016-08-08 |
| 23 |
Treasury Prime
Treasury Prime is a Banking-as-a-Service company that connects banks and FinTech…
|
San Francisco | 51 - 100 | $71.5M | Series C | 2022-09-09 |
| 24 |
Sendbird
The omnichannel AI agent platform for delightful customer service.
|
San Mateo | 251 - 500 | $220.7M | Series Unknown | 2022-01-01 |
| 25 |
StackHawk
StackHawk is an API and application security testing platform that enables detec…
|
Denver | 11 - 50 | $47.3M | Series B | 2025-05-22 |
| 26 |
Tealium
Tealium is a provider of customer data orchestration tools aimed to address chal…
|
San Diego | 501 - 1K | $263.9M | Series Unknown | 2022-10-03 |
| 27 |
Avo
Avo is a leading data quality platform for product analytics. Adobe, Fender & Ik…
|
Walnut | 11 - 50 | $4.5M | Angel | 2021-01-01 |
| 28 |
Symbl.ai
Symbl.ai is an early-stage, venture-backed startup that is democratizing access …
|
Seattle | 51 - 100 | $23.6M | Series A | 2021-11-05 |
| 29 |
Agave
Agave provides a unified API for data access across various construction softwar…
|
San Francisco | 11 - 50 | $3.4M | Seed | 2023-08-30 |
| 30 |
Postman
Postman is a software company that offers a platform for the users to design, de…
|
San Francisco | 501 - 1K | $433.0M | Series D | 2021-08-18 |
| 31 |
WorkOS
WorkOS is a unified platform with modern APIs and SDKs for enterprise-ready feat…
|
San Francisco | 11 - 50 | $195.0M | Series C | 2026-03-02 |
| 32 |
E2B
E2B develops a cloud infrastructure tailored for AI agents and applications.
|
San Francisco | 11 - 50 | $35.0M | Series A | 2025-07-28 |
| 33 |
Bestow
Bestow is a life insurance SaaS company that utilizes advanced technology and da…
|
Dallas | 101 - 250 | $302.5M | Series D | 2025-05-13 |
| 34 |
Metaplane
Metaplane ensures everyone trusts your business' data with automatic anomaly det…
|
Boston | 101 - 250 | $24.7M | Series Unknown | 2024-05-15 |
| 35 |
AirOps
AirOps enables businesses to build AI-powered content workflows combining multip…
|
San Francisco | 11 - 50 | $62.5M | Series B | 2025-11-10 |
| 36 |
DuploCloud
DevOps-as-a-Service. No-code and low-code infrastructure automation for cloud se…
|
San Jose | 101 - 250 | $49.5M | Series B | 2023-11-29 |
| 37 |
Turnkey
Turnkey is a crypto wallet infrastructure company that enables embedded wallets …
|
New York | 11 - 50 | $52.5M | Series B | 2025-06-09 |
| 38 |
Sila
Sila is the leading money API for fintech. An API platform that provides banking…
|
Portland | 51 - 100 | $20.7M | Series A | 2021-07-26 |
| 39 |
Recall.ai
Recall.ai provides unified APIs and SDKs to capture, transcribe, and analyze rec…
|
San Francisco | 11 - 50 | $50.7M | Series B | 2025-09-04 |
| 40 |
Merge
Merge is one API to add hundreds of integrations to your product
|
San Francisco | 101 - 250 | $74.5M | Series B | 2022-10-24 |
| 41 |
Monogoto
Monogoto is an API-driven cellular infrastructure-as-a-service enabling IoT conn…
|
Chatsworth | 11 - 50 | $38.0M | Series A | 2024-10-15 |
| 42 |
FrankieOne
FrankieOne connects with hundreds of different data sources to provide a complet…
|
Melbourne | 51 - 100 | $32.0M | Series A | 2022-11-28 |
| 43 |
Kevel
Kevel is a developer of ad-serving APIs to help developers build server-side ad …
|
Durham | 51 - 100 | $45.1M | Series C | 2024-03-07 |
| 44 |
emnify
EMnify is the leading cloud building block for cellular communications in the Io…
|
Berlin | 101 - 250 | $79.9M | Series B | 2022-01-20 |
| 45 |
Hydra Host
Hydra offers a bare metal GPU platform, connecting businesses to a vareity of in…
|
Miami | 11 - 50 | $10.6M | Seed | 2025-02-10 |
| 46 |
Kernel
Kernel is a developer platform that provides Crazy Fast Browser Infrastructure f…
|
San Francisco | 1 - 10 | $22.6M | Series A | 2025-10-09 |
| 47 |
Apollo GraphQL
Apollo GraphQL helps developers build better software with a declarative, graph-…
|
San Francisco | 101 - 250 | $183.2M | Series Unknown | 2022-03-01 |
| 48 |
Sohar Health
Sohar Health automates insurance verification for behavioral health providers wi…
|
New York | 1 - 10 | $3.8M | Seed | 2023-09-29 |
| 49 |
Tyk
Tyk is an open source API gateway and management platform that provides on-premi…
|
London | 101 - 250 | $40.0M | Series B | 2021-09-15 |
| 50 |
Equixly API Security
Europe's Top-Tiered Agentic AI Hacker, Mastering API Security Testing
|
Florence | 11 - 50 | $13.3M | Series A | 2025-12-09 |