The comparison was made immediately after launching applications with a single request in one collection on Windows 10 64-bit, Intel Core i9-11900.
The screenshot below compares memory usage by different REST clients.
The same data in chart form:
NativeRest has a more responsive GUI and fast JSON rendering. Code editor was developed specifically for NativeRest that provides fast JSON output and scrolling. Below is an example preview of JSON in NativeRest, Insomnia and Postman.
Time to display a 50 MB response in JSON format:
Launch times were compared when the applications were launched a second time.
NativeRest also has a fast launch time. It's opens instantly without twitching the GUI, unlike Postman.
Thanks to the use of native technologies, NativeRest launches quickly, has a fast GUI, fast JSON processing, and use up to 100 times less memory than Electron-based REST clients.
It is worth noting that NativeRest has a portable version of 7 MB and the installer size is 12 MB.