Flux, Modern API Client

What it does

Flux is a native desktop API client built with Tauri not Electron. Supports REST, gRPC (withproto import & server reflection), WebSocket, and SSE out of the box. Run the same request across multiple environments side by side. Generate tests with AI using your own API key (BYOK). Open source. No account needed to start.

Modern desktop API client. Local-first, AI-powered, cloud-synced. Under 30 MB RAM, no Electron. Free account required, sign up with email or GitHub.

Built with Rust. Under 30 MB RAM. No Electron. Free account, sign up with email or GitHub. Most API clients are Electron wrappers consuming hundreds of MB of RAM. Flux is different and the difference is obvious from the first request. Most API clients bundle a full Chromium engine and Node.js runtime. Flux is built with Tauri and Rust, a true native binary with no web runtime overhead. Other tools need third-party integrations for load testing and mocking. With Flux, both are native features , no extra installs, no Docker, no config files. Many API clients route your data through their cloud by default. Flux stores everything locally. A free account is required (email or GitHub), cloud sync…from fluxapi.dev

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