In TROM-Jaro you can find thousands upon thousands of applications. Pretty much every single application that is available for Linux is available in Add/Remove Software in TROM-Jaro. On this page you will find curated trade-free applications (we are adding more and more all the time). To use the “install” button you should first install the pamac-url-handler. In TROM-Jaro you can find the package in the same “Add/Remove Software”. We have it in our own TROMrepo. If you use an older version of TROM-Jaro (17.06.2019 or older), open the terminal and do:

sudo pacman -Syu pamac-url-handler --overwrite /usr/bin/pamac-url-handler