Apps similar to Bootsmann include Bruno, which is open source with a free version. Other options are Postman, Insomnia REST Client, Yaak and Hoppscotch. In total there are nine API Clients like Bootsmann for Mac, Windows, Linux, the web and Chrome OS.
Lightweight open source API client offering offline API testing, local filesystem storage via plain text, version control compatibility with git, intuitive request management, privacy-first design, cross-platform support, minimal resource usage, and community-driven development.
United States
Postman is a collaborative platform for API development that provides extensive tools for designing, testing, and documenting APIs. It allows API verification through requests, automated testing via Collection Runner, and offers both free and paid plans, catering to individuals and teams.
United States
A powerful REST API Client with cookie management, environment variables, code generation, and authentication for Mac, Window, and Linux.
United States
The API client for modern developers. Call REST, GraphQL, and gRPC APIs from a simple and intuitive app.
Canada
Hoppscotch is an open-source API development ecosystem. It helps you create your requests faster, saving you precious time on your development.
United States
Free, open source, git-native API client. A local-first, account-free Postman alternative with a built-in MCP server, SOAP/GraphQL, request chaining and performance runs.
France
EU
A free, open-source Postman-style API tester you run locally. Record browser requests, auto-generate chained tests, and ship them straight to your CI—no sign-ups, no cloud, just code.
United States
Zaku is a native Rust, local-first, open-source API client engineered for speed and productivity.
Kreya is a GUI client for gRPC, REST and WebSocket APIs with innovative features for environments, authorizations and more.
Switzerland
