I'm the author of HTTP Toolkit! Just ran into this by chance, glad you like it :-D I should mention here: not only is the core product all free, it's also comp

I'm the author of HTTP Toolkit! Just ran into this by chance, glad you like it :-D I should mention here: not only is the core product all free, it's also completely open source, even including the paid bits (https://github.com/httptoolkit https://github.com/httptoolkit). And those Pro features are completely free for all contributors to the project. I've tried to set it up so I couldn't run off with it and force everybody to start paying even if I wanted to, but any suggestions for further improvements there very welcome.