What is better than the existing, established alternatives https://www.usebruno.com/ and https://insomnia.rest/ ?
I would stay off Insomnia. A few versions ago, they practically took my local configuration ransom so they could force me to create a cloud account. Bruno is (still) not there, but the maintainers are slowly heading that way.
Insomnia has been around for a while but just like this post from a new account, there is a lot of push for bruno, which is usually a redflag. Never trust things that are "preached" for free.
what is wrong with curl and httpie (I mean the open source cli one, no idea what the desktop one does)?
if you use VS Code, there are a lot of alternatives:
[0]: https://marketplace.visualstudio.com/items?itemName=humao.re... - rest client storing config locally
[1]: https://marketplace.visualstudio.com/items?itemName=Christia...
[2]: https://marketplace.visualstudio.com/items?itemName=prawel.r... - same as [0], but with GUI
[3]: https://marketplace.visualstudio.com/items?itemName=slverma....
etc.
I think Insomnia and Bruno are both non-native JS apps, I think the moat here is that "this" is not "that".
Not that I necessarily recommend yaak but this post explains why Bruno and Insomnia are not to be trusted: https://royathan.com/blog/the-api-client-hunt/