The local-first API client.
Offline by default. No account. No Electron.
Build and test REST APIs with a desktop client that starts in under a second and keeps your data on your machine. Import from Postman or Insomnia and get to work in minutes.
Performance
Performance that speaks for itself
No Chromium overhead. Startup time measured in milliseconds, not seconds. Full methodology on the benchmarks page.
| Metric | Ironcall | Postman | Insomnia |
|---|---|---|---|
| Startup time | ~180 ms | ~3200 ms | ~2100 ms |
| RAM idle | ~45 MB | ~340 MB | ~210 MB |
| RAM with 50 requests | ~62 MB | ~410 MB | ~280 MB |
* Placeholder data — real measurements in progress.
Full methodologyOffline by default
No account, no cloud dependency. Collections, environments and history live on your machine — accessible and fast, with or without a connection.
Built on Tauri + Rust
No Chromium. No Node.js runtime. Starts in ~180ms, uses ~45MB at idle. Fast when you open it, fast when you use it.
Built for teams
Cloud sync via CRDTs ships with the beta. Real-time collaboration follows in V2. The client works without either, and always will.
Getting started
Up and running in minutes
Install
Download for Windows or Linux. No account, no installer subscription.
Import your collections
Bring in your existing Postman or Insomnia workspace in one click.
Start testing
Send requests, inspect responses, manage environments. No setup beyond a download.
Free Forever. Pay for the Cloud.
The client is free, always. Pro adds cloud sync and a hosted account — launching with V1.
Pro
- ✓ Everything in Free
- ✓ Cloud sync across devices (CRDTs, offline-first)
- ✓ Hosted account & web dashboard
- ✓ Hosted in Europe
- → Shared workspaces, real-time collaboration & comments (V2)