Voiden - A Markdown based Open Source Alternative to Postman
Voiden - A Markdown based Open Source Alternative to Postman
GitHub - VoidenHQ/voiden: Define, test, and document APIs like a developer, not a SaaS user. No accounts. No lock-in. No telemetry. Just Markdown, Git, hotkeys, and your damn specs.
Define, test, and document APIs like a developer, not a SaaS user. No accounts. No lock-in. No telemetry. Just Markdown, Git, hotkeys, and your damn specs. - VoidenHQ/voiden
Voiden is an offline-first, git-native API tool built on Markdown - and it very intentionally didn’t start as “let’s build a better Postman”.
Over time, API tooling became heavyweight: cloud dependencies for local work, forced accounts, proprietary formats, and workflows that break the moment you’re offline. Testing a localhost API shouldn’t need an internet connection.
So we asked a simple question: What if an API tool respected how developers already work?
That led to a few core ideas:
Offline-first, no accounts, no telemetry
Git as the source of truth
Specs, tests, and docs living together in Markdown
We opensourced Voiden because extensibility without openness just shifts the bottleneck.
If workflows should be transparent, the tool should be too.
Github : https://github.com/VoidenHQ/voiden
Download here : https://voiden.md/download