Local-first, native-speed. Send REST, GraphQL, gRPC, WebSocket — all from one interface. No login. No cloud. No bloat.
Available for macOS, Windows, and Linux

_features
A complete API development toolkit built for developers who value speed, privacy, and control.
50MB RAM. <2s startup. Tauri v2 + Rust backend delivers native performance — not Electron bloat.
Learn moreYour data never leaves your machine. No login. No cloud. No telemetry. Complete privacy by design.
Learn moreYAML files. One per request. Fully diffable, mergeable, versionable. Works with any Git workflow.
Learn morePre/post scripts in TypeScript. Chai assertions, CryptoJS, Lodash, Faker — all built in.
Learn moreGenerate requests from natural language. Auto-generate tests. Use your own API key — no usage limits.
Learn moreExtend with JavaScript or WASM plugins. Custom auth, transformers, integrations — your way.
Learn more_protocols
REST, GraphQL, gRPC, WebSocket, SSE, MQTT — all with the same experience.
12 seconds. That's all it takes to see why developers are switching.
_performance
Same power. Fraction of the resources.
Average RAM usage at idle — measured on macOS 14, Apple M2, 10 requests loaded
0MB
Average RAM Usage
vs 800MB for Postman
<0s
Cold Start Time
vs 10-30s for Postman
0MB
Download Size
vs 200MB+ for Postman
“Postman uses 800MB of RAM to send a GET request. ApiArk uses 50MB.
Your laptop deserves better.”
_compare
Every feature. Every competitor. No asterisks.
| Feature | oursApiArk | Postman | Bruno | Insomnia | Hoppscotch |
|---|---|---|---|---|---|
| Framework | Tauri v2 | Electron | Electron | Electron | Tauri |
| RAM Usage | ~50MB | 300-800MB | 150-300MB | 200-400MB | 50-80MB |
| Account Required | Optional | Optional | |||
| Data Storage | Filesystem | Cloud | Filesystem | Cloud | IndexedDB |
| REST | |||||
| GraphQL | |||||
| gRPC | |||||
| WebSocket | |||||
| SSE | |||||
| MQTT | |||||
| Mock Servers | Cloud only | Basic | |||
| Monitoring | Cloud only | ||||
| Collection Runner | |||||
| CLI Tool | Newman | bru CLI | inso | hopp | |
| Plugin System | npm | ||||
| Open Source | MIT | MIT | MIT | MIT | |
| Price | Free forever | $19/user/mo | $6/user/mo | $12/user/mo | Custom |
_download
Try it — 60 seconds to your first request.
No signup. No credit card. Just download and go.
Free forever. No account required.