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Resonance vs Voiden: catalog facts
Resonance	Voiden
Free Free and open source under the MIT licence.	Free Free and open source.
Linux	Windows, macOS, Linux
No account, cloud sync or telemetry Collections stored as plain YAML files	Requests and docs stored as plain Markdown files in Git Works offline with no account or cloud
Younger and smaller than Postman or Insomnia No built-in sync for sharing collections across a team	Uses its own .void file format Younger project than established API clients
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License not stated
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.