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Software · Development

Insomnia

Insomnia is an API client, available on Windows, macOS and Linux: self-hosting on your own server and end-to-end encryption.

  • Limited free plan
  • Windows, macOS and Linux
  • Open source
  • No account

Overview

Insomnia is an API client, available on Windows, macOS and Linux.

Features described in its GitHub repository and on its official website: self-hosting on your own server and end-to-end encryption.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information
  • “Leading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets” — official website, 10 November 2026
  • “Mock APIs using a cloud or self-hosted mocking server.” — GitHub, 10 November 2026
  • “Collaborate in the cloud with native sync and optional end-to-end encryption for sensitive work.” — official website, 10 November 2026

At a glance

Insomnia offers a limited free plan; advanced features or heavier use are paid.

Its licence (MIT) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

Plans and conditions

  • Free plan: basic features are free; others are reserved for paid plans.
  • Paid subscriptions from 12 $ per month (price read on the official page).

Strengths

  • Open source code
  • No account needed
  • No credit card asked
  • Commercial use allowed

Weaknesses

  • Limited free plan

About

Insomnia is an open-source, cross-platform API client for GraphQL, REST, WebSockets, Server-sent events (SSE), gRPC and any other HTTP compatible protocol. With Insomnia you can: Debug APIs using the most popular protocols and formats. Design APIs using the native OpenAPI editor and visual preview. Test APIs using native test suites. Mock APIs will be coming soon in November 2023. Build CI/CD pipelines using the native Insomnia CLI for linting and testing. Collaborate with others using the many collaboration features to share your projects. And a lot more! The following storage options are supported for your projects, collections, specs and all other files: Local Vault: for local storage of collections, design specs and every other resource. Cloud Sync: for cloud collaboration, encrypted and free. Git Sync: for Git storage of all files using any 3rd party Git repository.

Description from Flathub — AppStream (Flathub)

Sources and checks

  • Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) —
  • Facts collected from Unspecified source (platforms) —
  • Facts collected from Official plan pages (pricing, licence, terms) (limits, free status, commercial use) —
  • Facts collected from Winget (Windows Package Manager) (credit card, account, source code, publisher, licence, free status, platforms, commercial use, version) —
  • Last technical check: 6 November 2026
  • Description from Flathub — AppStream (Flathub)

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