Guide API is described as 'API integration platform for testing, prototyping, and running of any API flow. The right tool for successful API flow integration - nice, easy, simple, and cheap'. There are more than 10 alternatives to Guide API for a variety of platforms, including Mac, Windows, Linux, Online / Web-based and Chrome OS. The best alternative is Insomnia REST Client, which is both free and Open Source. Other great apps like Guide API are Postman (Freemium), Thunder Client (Free), Requester (Free, Open Source) and RapidAPI (Free).
RESTtest is a simple yet intuitive way to test RESTful web services and standard HTTP calls. RESTtest allows you to enter a HTTP request body and any necessary headers. After the request is submitted, response information can be both viewed and saved to disk.
Hitman is built to Collaborate, Develop, & Publish Better APIs – FASTER. Share your work in a dedicated workspace and invite your teammates to collaborate. Real-time collaboration and faster feedback cycles to help you build effectively.