The best alternatives to Composé are Flinto, AppStarter, and Rawson kit. If these 3 options don't work for you, we've listed a few more alternatives below.
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Postman Recorder by DevTools— Export Postman APIs from browser
BlueLibs is a collection of open source products designed to create the best possible experience for starting new projects, by offering rapid prototyping tools and a set of modules to fit the most demanding projects.