Trying out openSUSE Tumbleweed

"It isnt terribly well advertised but the best place for getting software for opensuse is software.opensuse.org. you will find it generally works very well if packaged for Tumbleweed. "

I think you'll find that a modern openSUSE Tumbleweed or Leap installation has https://www.opensuse.org/searchPage/ as it's homepage in all the browsers by default, and that includes a nice 'Get Software' link in the top right ;)

But for Tumbleweed, we much prefer encouraging users and contributors to push for all the packages in Tumbleweed proper, instead of relying on many additional repositories - so much cleaner that way, less risky for users, easier for everyone to collectively maintain, and benefits from collective openQA and human-QA testing..