Apiark
Privacy-first API platform built with Tauri v2. No login, no cloud, ~60 MB RAM. A lightweight Postman alternative.
Install / Use
/learn @berbicanes/ApiarkREADME
<p align="center"> <img src="docs/screenshots/rest-get.png" alt="ApiArk — REST GET Request" width="800" /> </p> <details> <summary><strong>More screenshots</strong></summary> <table> <tr> <td><strong>POST Request</strong></td> <td><strong>GraphQL</strong></td> </tr> <tr> <td><img src="docs/screenshots/rest-post.png" alt="POST Request" width="400" /></td> <td><img src="docs/screenshots/graphql.png" alt="GraphQL" width="400" /></td> </tr> <tr> <td><strong>WebSocket</strong></td> <td><strong>Server-Sent Events</strong></td> </tr> <tr> <td><img src="docs/screenshots/websocket.png" alt="WebSocket" width="400" /></td> <td><img src="docs/screenshots/sse.png" alt="SSE" width="400" /></td> </tr> <tr> <td><strong>PUT Request</strong></td> <td><strong>PATCH Request</strong></td> </tr> <tr> <td><img src="docs/screenshots/rest-put.png" alt="PUT Request" width="400" /></td> <td><img src="docs/screenshots/rest-patch-title.png" alt="PATCH Request" width="400" /></td> </tr> <tr> <td><strong>DELETE Request</strong></td> <td></td> </tr> <tr> <td><img src="docs/screenshots/rest-delete.png" alt="DELETE Request" width="400" /></td> <td></td> </tr> </table> </details>
Why ApiArk?
| | Postman | Bruno | Hoppscotch | ApiArk | |---|---|---|---|---| | Framework | Electron | Electron | Tauri | Tauri v2 | | RAM Usage | 300-800 MB | 150-300 MB | 50-80 MB | ~60 MB | | Startup | 10-30s | 3-8s | <2s | <2s | | Account Required | Yes | No | Optional | No | | Data Storage | Cloud | Filesystem | IndexedDB | Filesystem (YAML) | | Git-Friendly | No | Yes (.bru) | No | Yes (standard YAML) | | gRPC | Yes | Yes | No | Yes | | WebSocket | Yes | No | Yes | Yes | | SSE | Yes | No | Yes | Yes | | MQTT | No | No | No | Yes | | Mock Servers | Cloud only | No | No | Local | | Monitors | Cloud only | No | No | Local | | Plugin System | No | No | No | JS + WASM | | Proxy Capture | No | No | No | Yes | | Response Diff | No | No | No | Yes |
Download
| Platform | Download |
|----------|----------|
| Windows | .exe installer • .msi |
| macOS | Apple Silicon .dmg • Intel .dmg |
| Linux | .AppImage • .deb • .rpm |
# Homebrew (macOS)
brew tap berbicanes/apiark
brew install --cask apiark
# Scoop (Windows)
scoop bucket add apiark https://github.com/berbicanes/apiark
scoop install apiark
# APT (Debian/Ubuntu)
curl -fsSL https://berbicanes.github.io/apiark-apt/install.sh | sudo bash
sudo apt install apiark
Also available on the Microsoft Store.
</details> <details> <summary><strong>Build from source</strong></summary>Prerequisites: Node.js 22+, pnpm 10+, Rust toolchain, Tauri v2 system deps
git clone https://github.com/berbicanes/apiark.git
cd apiark
pnpm install
pnpm tauri build
Switching from Postman
- Export your Postman collection (Collection v2.1 JSON)
- Open ApiArk
Ctrl+K> "Import Collection" > select your file- Done. Your requests are now YAML files you own.
Also imports from: Insomnia, Bruno, Hoppscotch, OpenAPI 3.x, HAR, cURL.
Features
Multi-Protocol — REST, GraphQL, gRPC, WebSocket, SSE, MQTT, Socket.IO in one app. No tool has broader protocol coverage.
Local-First Storage — Every request is a .yaml file. Collections are directories. Everything is git-diffable. No proprietary formats.
Dark Mode + Themes — Dark, Light, Black/OLED themes with 8 accent colors.
TypeScript Scripting — Pre/post-request scripts with full type definitions. ark.test(), ark.expect(), ark.env.set().
Collection Runner — Run entire collections with data-driven testing (CSV/JSON), configurable iterations, JUnit/HTML reports.
Local Mock Servers — Create mock APIs from your collections. Faker.js data, latency simulation, error injection. No cloud, no usage limits.
Scheduled Monitoring — Cron-based automated testing with desktop notifications and webhook alerts. Runs locally, not on someone else's server.
API Docs Generation — Generate HTML + Markdown documentation from your collections.
OpenAPI Editor — Edit and lint OpenAPI specs with Spectral integration.
Response Diff — Compare responses side-by-side across runs.
Proxy Capture — Local intercepting HTTP/HTTPS proxy for traffic inspection and replay.
AI Assistant — Natural language to requests, auto-generate tests, OpenAI-compatible API.
Plugin System — Extend ApiArk with JavaScript or WASM plugins.
Import Everything — Postman, Insomnia, Bruno, Hoppscotch, OpenAPI, HAR, cURL. One-click migration.
Performance
Built with Tauri v2 (Rust backend + native OS webview), not Electron.
| Metric | Target | |---|---| | Binary size | ~20 MB | | RAM at idle | ~60 MB | | Cold startup | <2s | | Request send latency | <10ms overhead |
Data Format
Your data is plain YAML. No lock-in. No proprietary encoding.
# users/create-user.yaml
name: Create User
method: POST
url: "{{baseUrl}}/api/users"
headers:
Content-Type: application/json
auth:
type: bearer
token: "{{adminToken}}"
body:
type: json
content: |
{
"name": "{{userName}}",
"email": "{{userEmail}}"
}
assert:
status: 201
body.id: { type: string }
responseTime: { lt: 2000 }
tests: |
ark.test("should return created user", () => {
const body = ark.response.json();
ark.expect(body).to.have.property("id");
});
CLI
# Run a collection
apiark run ./my-collection --env production
# With data-driven testing
apiark run ./my-collection --data users.csv --reporter junit
# Import a Postman collection
apiark import postman-export.json
No Lock-In Pledge
If you decide to leave ApiArk, your data leaves with you. Every file is a standard format. Every database is open. We will never make it hard to switch away.
Community
- GitHub Discussions — Ideas, Q&A, show & tell
- GitHub Issues — Bug reports and feature requests
Translations
ApiArk UI supports internationalization via react-i18next. Currently available in English.
Help us translate ApiArk into your language! See the locales/ directory and submit a PR.
Development
# Install dependencies
pnpm install
# Run in development mode
pnpm tauri dev
# TypeScript check
pnpm -C apps/desktop exec tsc --noEmit
# Build for production
pnpm tauri build
Project Structure
apiark/
├── apps/
│ ├── desktop/ # Tauri v2 desktop app
│ │ ├── src/ # React frontend
│ │ └── src-tauri/ # Rust backend
│ ├── cli/ # CLI tool (Rust)
│ ├── mcp-server/ # MCP server for AI editors
│ └── vscode-extension/ # VS Code extension
├── packages/
│ ├── types/ # Shared TypeScript types
│ └── importer/ # Collection importers
└── docs/ # Documentation and lega
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