Rather than re-invent the wheel here, I suggest as starting points, the "awesome (anything)" lists at GitHub, and something like the Wikipedia page https://en.w

Rather than re-invent the wheel here, I suggest as starting points, the "awesome (anything)" lists at GitHub, and something like the Wikipedia page https://en.wikipedia.org/wiki/List_of_free_and_open-source_software_packages https://en.wikipedia.org/wiki/List_of_free_and_open-source_s... List of free and open-source software packages. A quick scan tells me that none of these are of low quality. And they're categorized, so you might focus your requests on certain areas (an extension of the OP) in order to get some ground truth.