Introduction
Echolon is a powerful, local-first API client built for modern developers. It's an open source alternative to Postman with Git integration, offline support, and multi-protocol capabilities.
What is Echolon?
Echolon is designed to help developers build, test, and document APIs efficiently. It provides a full-featured API client combined with helpful tools to publish your API specs and an advanced mocking server (local and cloud) Unlike cloud-based alternatives, Echolon stores all your data locally, giving you complete control over your API collections, environments, and secrets.
Key Features
Multi-Protocol Support
REST, WebSocket and GraphQL (coming soon) - all in one tool.
Git Integration
Sync your collections and environments with Git for version control and team collaboration.
Offline First
Work without an internet connection. Your data is stored locally and always accessible.
Import & Export
Import from Postman, OpenAPI, and more. Export or publish directly to the web.
Cross-Platform
Works on Windows, macOS, Linux and Web.
Mocking
1-Click mocking for any API response with the a local OR cloud proxy.
Getting Started
Ready to get started with Echolon? Choose your preferred client: