One aspect of chess that's really interesting is UCI which stands for univeral chess interface. It's a simple protocol that all engines "speak" and almost all pieces of chess software support. Chess players tend to collect engines that are good at certain things and then use whatever UX they are most comfortable with. At least in the past before Stockfish became so dominant.

The chess community in general is pretty technical. lichess.org is an absolute marvel of a website. It's full of brilliance and it's all open source. Interestingly it's computer analysis feature went through a notable progressions of approaches:

First it was server sided stockfish. Later they compiled stockfish via emscripten to .js so that analysis could run locally. This recently became PNACL for speed and finally even more recently WebAssembly for portability. Pretty cutting edge for the community of such an old game!