COMMUNITY LAUNCH / Developer APIs
Gostman
Free, open source API client and Postman alternative
About Gostman
Gostman is a free, open source API client for REST, GraphQL, gRPC, WebSocket, MQTT, SOAP and MCP. No account is required. Collections are stored as YAML files in your Git repository, and secret values are kept in your operating system keychain or vault rather than in those files. Available as a desktop app for macOS, Windows and Linux, and as a web version.
Also listed in Open source
Key features
- Supports REST, GraphQL, gRPC, WebSocket, MQTT, SOAP and MCP
- Collections stored as YAML files in Git
- Secret variables kept in OS keychain or vault, not in files
- Imports Postman, Bruno, Insomnia, OpenAPI, HAR, .http and curl
- CLI runner for CI with text, JSON, JUnit and HTML reports
Use cases
- Testing and reviewing API requests in pull requests
- Running API test collections in CI pipelines
- Using a single API client with coding agents via an MCP server
Compared with
- Postman
- Bruno
- Insomnia
FAQ
Is Gostman free?
Yes. Gostman is open source and every feature is in the download, with no account, licence key or seat count.
Where do my secrets go?
Secret variables are stored in your OS keychain on desktop or browser storage on the web. Only the variable name is written to the YAML file.
Can it run in CI?
Yes. The gostman run command runs a folder and exits non-zero on failure, and a GitHub Action and Dockerfile are included.
Gostman at a glance
- Category
- Developer APIs
- Pricing
- Free
- Platforms
- Web, Mac, Windows, Linux
- Launched
- Nov 10, 2026
Last checked by an editor: 2026-11-10
Topics
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What has been checked
Gostman is a free, open source API client for REST, GraphQL, gRPC, WebSocket, MQTT, SOAP and MCP, suited to developers and testers who want collections stored as files in Git. The web version sends requests through a hosted proxy by default, so users who want tokens to stay off a server should use the desktop app or run the local relay.
Last checked: 2026-11-10. Read the notes for the scope of the review.
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