Echolon
FreemiumPostman Alternative. Open source, git-native, zero login
What does this tool do?
Echolon is an open-source, local-first API client designed to replace traditional tools like Postman. It emphasizes developer privacy and workflow efficiency by storing all data locally as Git-compatible text files, eliminating the need for cloud accounts or mandatory logins. The tool supports multiple API protocols including REST and WebSocket, with a robust feature set that includes advanced request editing, dynamic variable generation, and built-in Git integration.
AI analysis from Feb 18, 2026
Key Features
- Git-native workspace and collection management
- Advanced request editor with content type previews
- Dynamic variable system with built-in functions
- Local and cloud API mocking capabilities
- One-click API documentation publishing
- Multi-protocol support (REST, WebSocket)
- Comprehensive authentication method handling
Use Cases
- 1API development and testing for backend engineers
- 2Documenting and sharing API collections within development teams
- 3Mocking API responses during frontend development
- 4Debugging complex API authentication scenarios
- 5Managing multi-protocol API workspaces
Pros & Cons
Advantages
- Completely open-source with no mandatory cloud sync
- Native Git integration for version control
- Supports multiple authentication methods out of the box
- Local-first architecture ensures data privacy
- One-click API documentation publishing
Limitations
- GraphQL support is not yet fully implemented
- Relatively new tool with potentially fewer community integrations
- Limited enterprise collaboration features compared to established platforms
- Might require manual migration from other API clients
Pricing Details
Free forever for personal use, with optional paid features for teams and enterprise users. No specific pricing tiers were detailed on the website.
Who is this for?
Individual developers, small to medium engineering teams, open-source project maintainers, and API developers who prioritize privacy and local workflow management