Insomnia

Open-source API client for REST, GraphQL and gRPC.

Verified facts: 3 of 3
Alternatives ranked: 5
Approved reviews: 0
Visits sent from here: 0

About Insomnia

Insomnia is an open-source API client from Kong for designing, debugging and testing REST, GraphQL, gRPC and WebSocket APIs. It offers environments, request chaining, code generation and a clean desktop interface. Projects can be stored locally, synced to Git, or synced through Insomnia's cloud, which gives teams a choice about where data lives. Plugins extend authentication and other workflows, and the CLI runs tests in CI pipelines. A free plan covers individual use, while paid plans add collaboration and enterprise controls for teams that share collections.

Best for: Developers who want an open-source desktop API client.

What works

Open source
Local, Git or cloud storage
Clean interface

Why people leave

Account prompts in recent versions
Collaboration needs paid plans

Top Insomnia alternatives

See all 5

1
Bruno
No account required; collections live as files in your repo.
68.8
2
Hoppscotch
Browser-based and self-hostable for teams.
61.8
3
Postman
Full API lifecycle platform with mocks, monitors and docs.
54.3
4
Yaak
Built by Insomnia's original creator, local-first and fast.
40.0
5
Restfox
A minimal open-source client that imports Insomnia collections.
40.0

Why people left Insomnia

In reviewers' own words, from reviews of the apps they moved to. These are their opinions, not ours.

No switching stories yet. If you moved away from Insomnia, review the app you switched to and tell us why.

Reviews

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Insomnia: common questions

Is Insomnia free?

Yes. Insomnia is free, open-source software.

Is Insomnia open source?

Yes. The source code is on GitHub at Kong/insomnia.

What platforms does Insomnia run on?

Insomnia is available for Windows, macOS and Linux.

What are the best alternatives to Insomnia?

The highest-ranked Insomnia alternatives right now are Bruno, Hoppscotch and Postman. See the full ranked list for pricing, platforms and verified facts.

See all 5 Insomnia alternatives

Insomnia facts

3 of 3 verified

Open source: Yes; Checked Oct 24, 2026github.com(opens source in a new tab); “License: Apache-2.0 (Apache License 2.0).”
Maker: Kong; Checked Oct 24, 2026insomnia.rest(opens source in a new tab); “Cloud Storage API Debugging Enterprise Features MCP Client Kong Konnect Pricing Docs Plugins Login Get Started for Free”
Free plan: Yes; Checked Oct 24, 2026insomnia.rest(opens source in a new tab); “MCP Client Kong Konnect Pricing Docs Plugins Login Get Started for Free Pricing Predictable pricing, no surprises, from individual”