Opensource C++ alternative to Postman/Insomnia/Hoppscotch for simple HTTP REST API testing. It provides a simple (but functional) graphical user interface and a basic set of functions to issue REST API requests. Bootsmann is especially useful for embedded devices and local development, where low memory usage and fast response times are crucial (it requires ca. 5-10 times less RAM than "big brothers" and starts in a second). Written in C++ on top of Qt framework, Bootsmann is free of unnecessary things like Electron, telemetry, cloud stuff and other bloatware. It uses direct system calls to run the requests at highest speed - no JS-based middleware, therefore fast and efficient. It does not upload any user data or API keys, ensuring privacy and security. No registration or login required. Bootsmann is available under the MIT License, allowing for free use, modification, and distribution. Bootsmann at GitHub: https://github.com/BootsmannApp/bootsmann Bootsmann at Softpedia: https://www.softpedia.com/get/Programming/Other-Programming-Files/Bootsmann.shtml Bootsmann at SourceForge: https://sourceforge.net/projects/bootsmann/