Voiden is an offline-first API client for developers, Testers and Technical Writers who want their API work to feel like code—not a SaaS dashboard.

Voiden lets you build, test, and link API requests like reusable blocks, comment on JSON or XML, preview responses (even PDFs or videos), and manage environments, themes, and scripts. The best part is that Voiden enables all this without ever needing the cloud. Voiden is your API lab: fast, transparent, versionable, and unapologetically opinionated.

No accounts, no sync, no cloud required.

Version 1.1.0 is now available!

👉 Download Voiden ↗️

The website will automatically detect your operating system and highlight the correct installer for you. (Windows, macOS Intel/Apple Silicon, and Linux).

🔧 Looking for the beta builds? Download beta versions ↗️

Head over to the Issues tab and click "New issue". Use the Bug report template to give us everything we need to fix it.

We love hearing about new possibilities. Use the Feature request template to tell us what you have in mind.

Open a general issue or leave a note.

Thanks for sharing your thoughts with us 💜

• Node.js v21.x
• Yarn v4.3.1
• Windows Only: Visual Studio Build Tools with:
  • "Desktop development with C++" workload
  • MSVC (C++ compiler)
  • Windows SDK

git clone https://github.com/VoidenHQ/voiden.git
cd voiden
yarn install 
yarn workspace @voiden/core-extensions build
cd apps/electron && yarn start

Note : yarn install may fail on Windows due to a non-PTY build issue. See the troubleshooting guide: Build Errors (Windows)

See the Full Installation Guide for detailed setup including Windows requirements.

All documentation is in the docs/ folder:

See the Documentation Index for the complete list.

voiden/
├── apps/
│   ├── electron/          # Electron main process
│   └── ui/                # React renderer
├── core-extensions/       # Built-in extensions
└── docs/                  # Documentation

We welcome contributions! Please read:

• Contributing Guide - How to contribute
• Code of Conduct - Community guidelines
• Security Policy - Reporting vulnerabilities

Track our progress and see what's coming next:

👉 View active milestone →

We organize our work into milestones that group related issues and features. Each milestone includes:

• Planned features for the release
• Bug fixes in progress
• Target release date

This project is licensed under the Apache License 2.0.

• Changelog
• Documentation
• Report an Issue