
A native API client for macOS
HTTP, GraphQL, WebSocket, and SSE in a single app that starts instantly, uses almost no RAM, and keeps your data on your machine.

Why Velo
Most API clients are Electron apps that take 5 seconds to launch and chew through 800 MB of RAM before you’ve sent a single request. Velo is built natively for macOS — it launches in under 200 ms, idles under 30 MB, and uses 0% CPU while you’re not interacting with it.
It does HTTP, GraphQL, WebSocket, and Server-Sent Events. It saves nothing to the cloud. There is no account to create. It is free.
HTTP requests
GET, POST, PUT, PATCH, DELETE, plus full header and body editing. Inspect responses with proper syntax highlighting and a tree view for JSON.
GraphQL
Schema introspection, query autocompletion, variables, and result inspection. Works against any standards-compliant GraphQL endpoint.
WebSocket
Connect, send, and receive frames. Inspect connection state, ping/pong timing, and the full message log.
Server-Sent Events
First-class SSE support. Subscribe to event streams, view raw and parsed event data, and reconnect on disconnect.
Local-first
Everything stays on your machine. No telemetry, no remote sync, no account required. Open the file format if you want — it's plain JSON.
Native UI
Built with SwiftUI. Real macOS keyboard shortcuts, real menu bar, real Touch ID for credentials, real dark mode.

How Velo compares
| Velo | Postman | Insomnia | Bruno | |
|---|---|---|---|---|
| Native macOS | ✅ | ❌ | ❌ | ❌ |
| Startup time | <200ms | 5-8s | 4-6s | 2-3s |
| Idle RAM | ~30 MB | 600-900 MB | 400-700 MB | 250-400 MB |
| HTTP | ✅ | ✅ | ✅ | ✅ |
| GraphQL | ✅ | ✅ | ✅ | ✅ |
| WebSocket | ✅ | ✅ | ✅ | ❌ |
| Server-Sent Events | ✅ | ❌ | ❌ | ❌ |
| Account required | ❌ | ✅ | ✅ | ❌ |
| Cloud sync default | n/a | ✅ | ✅ | ❌ |
| Price | Free | $14/seat/mo | $5/seat/mo | Free |
Get Velo
Also from Ataiva
- Seek — native file manager for macOS, the second app from this team.
- Chrome extensions — Run JavaScript, GoFaster, VideoGrab, and more.
- Free developer tools — JSON Formatter, Regex Tester, JWT Decoder, etc.