Logo Erynthis Erynthis
An alternative to Postman

Build faster,
ship with confidence.

A cross-platform, open-source API testing tool. Send and inspect requests efficiently with multiple methods, body types, and syntax highlighting—all powered by Rust.

Erynthis Program Screenshot

Blazing Fast

Built with Rust for instant startup and low memory usage. No electron lag, just raw performance.

Privacy First

Local-only by default. Your collections and environment variables stay on your machine, always.

Open Source

Transparent and community-driven. No hidden tracking, no paywalls for essential features.

Be part of the
future of API testing.

Experience the raw performance of Rust. Join the beta and shape the next generation tool.

Try Beta