I’m quite keen on meta-sites. Those are sites that don’t provide information about sites, applications etc. but they provide ways to find it. I suppose another way to describe this would be to say a categorised search engine for open source.
A case in question is libhunt.com. It tracks mentions of open-source projects and software libraries. So for instance you might want to see the most popular C libraries in the last month or even games in C,
Of course you aren’t limited to C or games; there are other open source libraries to look for, or even by the number of GitHub stars.
Libhunt uses the mention of the project on Reddit as it’s source for finding things. So things can change from day to day or week to week.