The API client your team shares, privately.
A lightweight API client that starts in under a second and keeps your data on your machine. When you need it, sync and collaborate in real time, end-to-end encrypted and hosted in the EU. Import from Postman or Insomnia and get to work in minutes.
Why Ironcall
No account, no cloud dependency. Collections, environments and history live on your machine, accessible and fast, with or without a connection.
Built for speed: offline-first, native Rust. No Chromium. No Node.js runtime. Fast when you open it, fast when you use it.
Cloud sync via CRDTs ships with the beta. Real-time collaboration follows in V2. The client works without either, and always will.
Performance
No Chromium. No Node.js runtime. The OS's native webview and a Rust backend mean a small binary, low idle memory, and a startup time measured in milliseconds, not seconds.
Cold startup
Launch to visible window, OS cache dropped first
4.9x
vs Postman
Warm startup
Second launch, OS cache warm
6.1x
vs Postman
RAM idle
Empty workspace, full process tree (PSS)
2.4x
vs Postman
Install size
Installed package on disk
14x
vs Postman
Getting started
Download for Windows or Linux. No account, no installer subscription.
Bring in your existing Postman or Insomnia workspace in one click.
Send requests, inspect responses, manage environments. No setup beyond a download.
The desktop client and CLI are free, always. Pro adds cloud sync and a hosted account, launching with V1.
Everything you need to work solo.
Free for everyone during the public beta. The final price is still being decided.
FAQ
Yes. Ironcall is a free, offline-first desktop API client and a direct alternative to Postman and Insomnia. The desktop app and CLI are free forever, with no request caps or collection limits, and you can import your existing Postman or Insomnia collections in one click.
Yes. Ironcall is offline by default. Collections, environments and history are stored locally in SQLite, and every request runs from your machine. A connection is only needed if you opt into cloud sync.
No. The desktop app and CLI work with no account and no sign-up. An account is only required if you enable cloud sync, which is free for everyone during the public beta.
Ironcall is built on Tauri and Rust instead of Electron. It uses the operating system's native webview rather than bundling Chromium and a Node.js runtime, so the install stays small, idle memory stays low (~280 MB), and it cold-starts in about 95 ms.
No credit card. No account. Just download and start testing.
Download Free