Co-Founder @ ApyHub - Helping dev teams streamline their API Lifefycle

Nikolas Dimitroulakis  • Peerlist

We open-sourced Voiden: Offline-first, git-native API tool built on Markdown We just open-sourced Voiden, an API tool we have been building. Important to mention that this was NOT a “let’s build a better Postman” kind of thing. In fact, we explicitly tried not to do that.Background: Over time, API tooling drifted into heavyweight platforms: cloud dependencies, forced accounts, per-seat pricing, proprietary formats, and workflows that break the moment you’re offline. Testing a <a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="http://localhost">localhost</a> API started requiring an internet connection. Specs, tests, and docs drifted into separate tools, and developers learned to live with the friction. Voiden started from a (simple??) reset question: What if an API tool respected how developers already work? Some choices that came as a result of this:<ul><li>Offline-first, no accounts, no telemetry</li><li>Git as the source of truth</li><li>No proprietary formats — APIs live as Markdown</li><li>Specs, tests, and docs live together, in one file</li><li>Reuse via importable/inheritable Markdown blocks</li></ul>We open-sourced it because extensibility without openness just moves the bottleneck upstream. If workflows should be transparent, the tool should be too. If developers should NOT surrender control of their APIs, the tool managing them can’t be a black box. We would love all the feedback, especially from people who have felt friction with existing API tooling and wondered why it has to be this complicated. Happy to answer questions.

Voiden API Client

Developer Advocate @ApyHub

CEO @ ApyHub

<a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="http://Voiden.md">Voiden.md</a> is a developer-first API client with local storage, Git-integrated all based on markdown + offline support. Voiden's modular API design and open-source plugins offer flexibility and security without the bloat.Voiden is like all API clients should be: Free and open (no login required).Over the years, we found ourselves managing way too many tools just to work with APIs: one for api specs, another for docs, a third for tests, etc etc. Eventually it starts to feel more like a performance than actual work.So we built Voiden: A git-native, extensible, and lightweight client that brings everything: specs, docs, tests, mocks into one single place. No bloat, no lock-in, no "platform overhead." Just structured API workflows that don’t fight your tools or your team.A few things we care about:<ul><li>Reusability and composability : APIs as building blocks, not silos.</li><li>Structure over scatter : everything lives together in one workspace.</li><li>No sign-in required : you can use it without creating an account.</li><li>Free and open : We are building this with the community in mind.</li></ul>Just to be clear: The goal is NOT to replace OpenAPI, but to provide a layer around existing specs that feels coherent, hackable, and friendly to real-world dev workflows.You can check it out here: <a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="https://voiden.md/">https://voiden.md/</a>And if you have feedback, suggestions, or just want to follow along:<a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="https://github.com/VoidenHQ/feedback">https://github.com/VoidenHQ/feedback</a>We are still early, but would love to hear from you: what you like, what is missing. Nikolas