Introducing Voiden: <a href="https://voiden.md" target="_blank" rel="noopener nofollow">https://voiden.md</a>
A free, offline, git-native API workplace.
Everything is in markdown and sits together: your API definition, its docs, and tests.
I’ve spent years as a dev wrestling with API design, and it’s a pain.
Got frustrated a lot, and often.
Pretty sure it sounds familiar.
Not once did I burn hours fixing API specs that didn’t match our code.
Docs were in a random tool, tests were separate, and governance was a mess.
Team API design sucks.
Cloud-sync feels sketchy.
Bloated tools slowing me down on quick tests. Specs and docs in different places break your flow.
And WTH is real-time collaboration? Make a branch.
Well, the team behind Voiden got tired of all this.
It’s not another Postman clone. It’s like code: markdown specs, reusable blocks, Git-versioned, offline.
And yes, it looks different than your usual API tool - on purpose.
Docs tie to your specs with live requests - a single source of truth.
Git tracks changes; branch, diff, review - no login or cloud nonsense.
Here’s a minimalistic GET request in Voiden:
<img src="https://media.daily.dev/image/upload/s--iy5bXDQ9--/f_auto/v1747816405/ugc/content_3fabac05-67f7-4873-89f2-d77c67dd189e?_a=BAMClqUq0" alt="Minimalistic GET request in Voiden">
To reproduce it:
<ol>
<li>Hit <code>Cmd+N</code> (Mac) or <code>Ctrl+N</code> (Win/Linux) to create a new file.</li>
<li>Type <code>/endpoint</code> to create a new (GET by default) request block.</li>
<li>Type or paste the URL you want to trigger a <code>GET</code> request to.</li>
<li>Hit <code>Cmd+Enter</code> (Mac) or <code>Ctrl+Enter</code> (Win/Linux) to run it.</li>
</ol>
And now you check the response.
That’s it.
Need something more complex?
No problem.
<img src="https://media.daily.dev/image/upload/s--dEjdajuE--/f_auto/v1747816643/ugc/content_7f978b69-ea4c-4b7b-ab82-c6dfc74f44fa?_a=BAMClqUq0" alt="POST request in Voiden">
To reproduce it:
<ol>
<li>Hit <code>Cmd+N</code> (Mac) or <code>Ctrl+N</code> (Win/Linux) to create a new file.</li>
<li>Type <code>/endpoint</code> to create a new (GET by default) request block.</li>
<li>Replace <code>GET</code> with <code>POST</code>.</li>
<li>Type or paste the URL you want to trigger a request to.</li>
<li>Type <code>/headers</code> to add an <code>API Headers</code> block.</li>
<li>Populate the key-value pairs of the headers block.</li>
<li>Type <code>/json</code> to add an <code>API Body</code> block.</li>
<li>Populate the <code>JSON</code> block with the request body object.</li>
<li>Hit <code>Cmd+Enter</code> (Mac) or <code>Ctrl+Enter</code> (Win/Linux) to run it.</li>
</ol>
You can run requests with a keystroke and see responses instantly in the panel. Document your endpoints naturally using plain Markdown: descriptions, examples, even error cases. No switching tabs, no sync delays, just specs that live where they should: with your code.
<img src="https://media.daily.dev/image/upload/s--PlIYU4nu--/f_auto/v1747816876/ugc/content_20559c64-ae0c-41e9-8e98-20be6e66806f?_a=BAMClqUq0" alt="Documented POST request in Voiden">
Commit it (yes, the terminal is in the app), run git diff, and your team sees what changed.
No login.
No lock-in.
No telemetry.
No more clones of that same tool we all used, and then moved to the next new kid in the block that looked similar.

A dedicated squad for devtools: discussions, recommendations and questions. 

Dev Tools

Voiden is a free, offline API workplace designed as a git-native tool that uses markdown for API definitions, documentation, and tests. It seeks to address common frustrations in API design by providing a single source of truth with Git tracking and eliminating the need for cloud syncing and bloated, redundant tools. Voiden simplifies API requests and documentation, integrating them directly into your codebase.

Voiden - free, offline, git-native API workplace (a different Postman alternative)

I had hope to see OpenAPI spec generation but your native plugin does not allow this, it will be nice.

Just tried it, seems pretty good. I am already loving it. The docs are pretty clear. I would like to see more on the extensibility.

It’s not open source nor it has a pricing.
Is it free to use?

I love this tool so much, very lightweight, fast and straightforward.
Am a big fan of shortcuts, so please add in the tab switch shortcuts or give us a way to add keybinds ourselves.
Really good software, though it seems i cant type out the json body myself, only pasting works.

Not open source, I don’t trust that they won’t do the same as Postman…