I stumbled on github tagging recently. It is a feature I was not aware of.
For example if I am very interested in RAT (remote access trojans) I can find these projects with https://github.com/search?q=topic%3Atrojan&type=Repositories and https://github.com/search?q=topic%3Arat&type=Repositories.
The syntax of the repo list is thus:
This a list of interesting keywords I've been looking at:
One should of course not jump to conclusions and understand that a knife can be used for killing but I used one this morning to cut my bread.