Insomnia vs Yaak

Comparing two open source alternatives to Postman . Use the comparison below to decide which one fits your needs.

Insomnia

Apache-2.0

The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.

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Yaak

MIT

The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC 🦬

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Side-by-side comparison

	Insomnia	Yaak
License	Apache-2.0	MIT
Self-hostable	No	No
GitHub Stars	38,396	18,606
Forks	2,286	752
Open Issues	833	24
Last Commit	May 11, 2026	May 11, 2026
First Released	Apr 23, 2016	Feb 16, 2023
Categories	API Development & Testing Tools	API Development & Testing Tools
Tags	#API #rest #http client #api client	#API #rest #http client #api client

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Scalar

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Bruno

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

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