Override network calls. Configurable via network-overrides Node package.
Extremely useful for front-end development. Setting up takes some time but very well worth it. Allows replacing client-side files without having to fiddle with local proxy servers (which may not be that trivial if you need to deal with some complex enterprise web application). Having the override configuration stored in the source code is very convenient. A lot more versatile than Chromium's built-in override functionality.
FreeMedian
warrenjday
https://requestly.com
https://modheader.com
Sergey Novikov
Yubi
https://tweak-extension.com
Pawel Raszewski
Pasupathi Rajamanickam
Kyle Paulsen
https://droplr.com/
paulb896