Looks similar to https://github.com/tldr-pages/tldr

Very similar indeed. Seems the biggest difference is mainly the language the tool was written in.

I'm the author of `cheat`. The two tools are somewhat less similar than they initially appear, due entirely to poor documentation on my part.

If you're interested in a breakdown of the differences, I elaborated on this recently:

https://news.ycombinator.com/item?id=31600605