this post was submitted on 06 Mar 2026
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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

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[–] melfie@lemy.lol 4 points 14 hours ago (2 children)

Postman never appealed me for these exact reasons, and I usually just use curl, but this looks like a great option.

[–] nikolasdimi@lemmy.world 4 points 14 hours ago

welcome to try and share your feedback here or here: https://github.com/VoidenHQ/voiden :)

[–] nikolasdimi@lemmy.world 4 points 14 hours ago

yap, I think the plain text all the way from design, tests and docs is powerful. Looking forward to any thoughts you might have when you try.