API Client
Provider 
Founded 2014
Sells To Developers
Pricing Model Freemium, Subscription
Ownership Acquired Subsidiary

Open-source cross-platform API client for designing, testing, and debugging HTTP, GraphQL, gRPC, and MCP APIs.
Insomnia is an open-source, cross-platform API client used to design, test, debug, and mock APIs across HTTP, GraphQL, gRPC, WebSocket, and MCP protocols. It offers a free tier with local and Git-based storage alongside paid cloud and enterprise plans for collaboration, governance, and single sign-on.
The client includes AI-assisted testing, a native MCP client, automated collection testing, API mocking from OpenAPI specs, and the Inso CLI for CI/CD integration. It is maintained as open source under Kong and distributed as a desktop application for Windows, macOS, and Linux.
| Attribute | API Client | API Client | Postman API Platform | |
|---|---|---|---|---|
| Provider | ||||
| Founded | 2014 | 2020 | 2014 | |
| Sells To | Developers | Enterprise, Small Business | Enterprise, Small Business | |
| Pricing Model | Freemium, Subscription | Recurring | Recurring, Software, Usage-based | |
| Ownership | Acquired Subsidiary | Venture Capital | Equity, Venture Capital |
Provider 
Founded 2014
Sells To Developers
Pricing Model Freemium, Subscription
Ownership Acquired Subsidiary
Provider 
Founded 2020
Sells To Enterprise, Small Business
Pricing Model Recurring
Ownership Venture Capital
Provider 
Founded 2014
Sells To Enterprise, Small Business
Pricing Model Recurring, Software, Usage-based
Ownership Equity, Venture Capital

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