Scalar 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.

Scalar

MIT

Scalar is an open-source API platform:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern Rest API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　✨ 1st-Class OpenAPI/Swagger Support

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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

	Scalar	Voiden
License	MIT	Apache-2.0
Self-hostable	No	No
GitHub Stars	15,109	1,109
Forks	854	40
Open Issues	104	23
Last Commit	May 26, 2026	May 26, 2026
First Released	Aug 16, 2023	May 9, 2025
Categories	API Development & Testing Tools	API Development & Testing Tools
Tags	#API #api client #rest #http client	#API #api client #DeepSeek #cli #markdown

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