Echolon is a powerful, local-first API client for developers with Git integration, offline support, and multi-protocol capabilities (REST, WebSocket, GraphQL coming soon), designed as an open-source alternative to Postman.
Local-first / Zero logins\n
Built-in Git integration and versioned workspaces\n
Multi-protocol support (REST, WebSocket, GraphQL coming soon)\n
Advanced Request Editor with content previews, JSON-Path filtering, and live schema validation\n
Open source and free to use\n
Local data storage with no mandatory cloud signup\n
Git-native workflow for teams and versioning\n
Unified API testing, mocking, and publishing in one tool\n
Cross-protocol support in a single workspace