Apps similar to Yaak include Bruno, which is open source with a free version. Other options are Postman, Insomnia REST Client, Hoppscotch and ApiArk. API Clients like Yaak are a crowded field, with more than 50 alternatives for Mac, Windows, Linux, the web and self-hosting.
GetAPI is a native macOS app that simplifies REST API testing by allowing users to import from Postman, make HTTP requests, and view responses in a streamlined interface.
United States
Send HTTP requests to API endpoints. GetIt's main focus is to make your life a lot easier when you have to test APIs or use somebody else's API.
Spec0 keeps your OpenAPI specs in one place and keeps them honest. Push specs from CI, the CLI or a GitHub app; Spec0 versions them, computes a change-log between versions, and blocks breaking changes on the pull request rather than after they ship.
Germany
EU
Use Test API for restful api testing. This postman alternative test rest api online and use post request online to test API endpoint.
United States
APISpider is a lightweight API client for testing, debugging, and documenting REST APIs. It includes request history, collections, environment variables, mock servers, and API docs — all designed to keep your workflow fast and distraction-free.
Pulse is an AI-powered automation testing tool which scans through your API documentation and generates hundreds of tests in a heartbeat.
Vietnam
Resonance is a local-first, zero-account API client application designed to provide an excellent user experience for testing and interacting with APIs. Built with Tauri, it offers a modern and intuitive interface for developers.
EchoAPI is an all-in-one API development collaboration platform that offers essential features like API debugging, design, automated testing, stress testing, and documentation generation.
apikumo is an API workspace that combines an API client, a hosted documentation site, and a live MCP (Model Context Protocol) endpoint in one place. Design your API once, and every AI agent can call it.
United Kingdom
