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← Insomnia

Alternatives

Insomnia alternatives

Insomnia is an open-source API client for designing, testing, debugging and mocking REST, GraphQL, gRPC, SOAP and WebSocket APIs. Here are 23 similar tools on DevHunt, starting with the closest matches.

Quick answerThe best free Insomnia alternative is Bruno, for offline-first API client. Pick Postman for comprehensive API platform, or Firecamp for open-source Postman alternative.

Insomnia is a free alternative to Postman.

At a glance

3 closest to Insomnia
ToolBest forPricingVotesComparison
PostmanComprehensive API platformPaid—vs Insomnia →
BrunoOffline-first API clientFree, open source—vs Insomnia →
FirecampOpen-source Postman alternativeFree, open source48vs Insomnia →

How to choose

  • For comprehensive API platform: Postman (paid)
  • For offline-first API client: Bruno (free, open source)
  • For open-source Postman alternative: Firecamp (free, open source)
  • For collaborative AI-native API testing: Insomnia itself

Closest alternatives

compared with Insomnia
  • Postman▲ 0 · Subscription

    Postman offers a larger ecosystem of pre-built integrations and a paid enterprise tier, while Insomnia focuses on open-source core and native Kong Konnect sync. Insomnia vs Postman →

  • Bruno▲ 0 · Free

    Bruno is an offline-first, Git-friendly client with a simpler UI; Insomnia adds AI-native testing, enterprise security and Kong Konnect integration. Insomnia vs Bruno →

  • Firecamp▲ 48 · Free

    Firecamp is an open-source Postman alternative with similar protocol support but lacks the native Kong Konnect integration and enterprise RBAC features of Insomnia. Insomnia vs Firecamp →

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  12. 11RedditAPIsRedditAPIs · Reddit MCP server and Reddit API alternative for AI agents82
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  18. 16Live Video Calling SDK by DyteLive Video Calling SDK by Dyte · Secure, Reliable & Lightweight Video SDK73
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  20. 18CorbadoCorbado · Passkey-first authentication for React, Next.js, Flutter & more !73
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FAQ

What is the best alternative to Insomnia?+

The closest Insomnia alternatives are Postman (comprehensive API platform), Bruno (offline-first API client) and Firecamp (open-source Postman alternative). Each one links to a side-by-side comparison with Insomnia.

What is the best free alternative to Insomnia?+

Bruno (offline-first API client) is the closest free alternative to Insomnia. Firecamp (open-source Postman alternative) is free too.

Is there an open source alternative to Insomnia?+

Yes. Bruno (offline-first API client) and Firecamp (open-source Postman alternative) are open source.

What is Insomnia used for?+

Insomnia is an open-source API client for designing, testing, debugging and mocking REST, GraphQL, gRPC, SOAP and WebSocket APIs. Common uses: design and iterate OpenAPI specs with live preview and linting, mock APIs quickly for front-end development or integration testing and run automated API test suites in CI pipelines using the Inso CLI.

Is Insomnia free?+

Insomnia has a free tier and paid plans, with a free trial.