Insomnia vs Voiden

Comparing two open source alternatives to Postman and Thunder Client and Paw and Apidog . 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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Voiden

Apache-2.0

Design, test and document APIs in plain Markdown with a git-native, offline-first approach.

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Side-by-side comparison

	Insomnia	Voiden
License	Apache-2.0	Apache-2.0
Self-hostable	No	No
GitHub Stars	38,442	1,109
Forks	2,287	40
Open Issues	857	23
Last Commit	May 26, 2026	May 26, 2026
First Released	Apr 23, 2016	May 9, 2025
Categories	API Development & Testing Tools	API Development & Testing Tools
Tags	#API #rest #http client #api client	#API #api client #DeepSeek #cli #markdown

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