Top API Companies in United States (2026 Update)
Browse API companies in United States with up-to-date profiles — funding rounds, investors, hiring, and expansion signals. Find recently funded and growing companies. Updated 2026.
Showing 484 Companies
| Company | Location | Founded | Industry | Services | Target Customers | Business Model | Revenue Model | Founders | Employees | Funding Stage | |
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
eDRV
The future of EV Charging. An AI-powered operations pla… |
San Francisco, Unite...
|
2020 |
API
SaaS
|
API-First Charging Management Platform
Interoperability Assurance
+1
|
Electric Vehicle Charging Network Operators
Developers
+1
|
— | — | — | 14 | Seed |
|
Hyperhuman
AI-Powered Health & Fitness Video Platform |
Las Vegas, United St...
|
2020 |
API
Computer Vision
+4
|
AI-powered Video Production And Delivery Platform For Health And Fitness Content Creation
|
Digital Fitness Providers
Connected Fitness Hardware Companies
+5
|
— | — | — | 7 | Grant |
|
recasta
Recasta is contributing to Infinimesh, developing an AI… |
Washington, United S...
|
2023 |
AI
API
+4
|
— | — | — | — | — | — | Angel |
|
|
Permify
Open-source authorization service for creating and main… |
San Francisco, Unite...
|
2022 |
API
Cyber Security
+1
|
Authorization As A Service
Fine-Grained Authorization Implementation
+1
|
Software Developers
Tech Companies
+2
|
— | — | — | 11 | Seed |
|
Apideck
Apideck enables developers to build integrations throug… |
San Francisco, Unite...
|
2020 |
API
Information Technology
+2
|
Unified API For Multiple Platforms
Accounting And ERP Platform Integrations
+3
|
Vertical SaaS Companies
B2B FinTech Providers
+2
|
B2B
SaaS
+1
|
Usage Based
Subscription
|
— | 32 | Series A |
|
Escape
The only DAST that works with your modern stack and tes… |
San Francisco, Unite...
|
2020 |
AI
API
+3
|
Dynamic Security Testing
API Discovery & Security
+3
|
CISOs
IT Managers
+6
|
— | — | — | 42 | Series A |
|
Automile
Automile, an IoT company, provides real-time gps tracki… |
Pleasant Grove, Unit...
|
2014 |
API
B2B
+2
|
Advanced GPS Fleet Tracking
Real-Time Updates
+2
|
Businesses With Company Fleets
Individuals Driving For Work
+2
|
B2B
SaaS
+1
|
Subscription
Usage Based
+1
|
— | 26 | Series B |
|
Stream
Stream powers Chat, AI Moderation, Activity Feeds, Vide… |
Boulder, United Stat...
|
2015 |
API
Messaging
+3
|
Chat Messaging
Video & Audio Streaming
+3
|
Developers
Enterprises
+13
|
SaaS
API
+1
|
Usage Based
Subscription
+1
|
— | 333 | Series B |
|
Strapi
Strapi is the leading open-source headless CMS. It’s 10… |
San Francisco, Unite...
|
2016 |
API
Developer Tools
+2
|
Design REST And GraphQL APIs
Content Management
+4
|
Developers
Content Managers
+5
|
Open Source
Platform
+1
|
Freemium
Subscription
+1
|
— | 85 | Series B |
|
TypingDNA
AI based Authentication and Fraud detection. |
Brooklyn, United Sta...
|
2016 |
AI
API
+4
|
Cloud Authentication
Verify 2FA
+3
|
Remote Workforce
Corporate Enterprises
+3
|
B2B
SaaS
+1
|
Subscription
Usage Based
+1
|
— | 150 | Series A |
|
|
Gravitee
An end-to-end solution to securely manage Agentic AI, E… |
Denver, United State...
|
2016 |
API
Analytics
+1
|
API Management
AI Agent Management
+2
|
Enterprises
Financial Services
+5
|
B2B
SaaS
+1
|
Subscription
Usage Based
+1
|
— | 224 | Series C |
|
Apres
Engaged AI - Helping the world build AI people can trus… |
San Francisco, Unite...
|
2018 |
AI
API
+3
|
AI Explainability Tools
Safety Solutions For AI Applications
|
Tech Developers
AI Enthusiasts
+2
|
B2B
SaaS
+1
|
Subscription
Tiered Pricing
+1
|
— | 11 | Seed |
|
|
Lokalise
Speak every customer’s language: clearly, confidently,… |
Dover, United States
|
2017 |
API
Cloud Infrastructure
+3
|
AI Translation Tools
Automated Workflows
+7
|
Product Managers
Localization Managers
+6
|
SaaS
B2B
+1
|
Subscription
Usage Based
+1
|
— | 234 | Unknown |
|
Monogoto
Secure Cloud-based Cellular Network |
Los Angeles, United...
|
2018 |
API
Developer Tools
+2
|
— | — | — | — | — | 48 | A Series |
|
Arta
Accelerated global commerce. |
New York, United Sta...
|
2015 |
API
Logistics
|
— | — | — | — | — | 89 | Series A |
|
TruWeather Solutions
Beyond Ordinary |
Reston, United State...
|
2015 |
API
Information Technology
|
— | — | — | — | — | 33 | Series Unknown |
|
Ribbon Health
Data platform with actionable provider information incl… |
New York, United Sta...
|
2016 |
API
Analytics
+2
|
— | — | — | — | — | 53 | Series B |
|
OpenLegacy
Build, automate & manage legacy integrations in one pla… |
Princeton, United St...
|
2013 |
API
Cloud Infrastructure
+3
|
— | — | — | — | — | 76 | Series C |
|
Crstl
The Modern B2B Commerce Network - Crstl is the mission-… |
San Francisco, Unite...
|
2021 |
API
Analytics
+1
|
— | — | — | — | — | 17 | Seed |
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|
Automate.io (acquired by Notio...
Put your business on autopilot. |
San Francisco, Unite...
|
2016 |
API
Automation
+3
|
— | — | — | — | — | 7 | Seed |
Showing 20 of 484 companies in this list
