st-sx

This[1] is an up-to-date fork with sixel support, and a few other patches. IMO it's unfair to compare barebones `st` with fully-featured terminals. The entire point of `st` is for users to apply their own patches to it, which does make it difficult to compare, since there's no standard version of it. `st` is a pretty great terminal. I switched to `foot` when I migrated to Wayland a few months ago, but not for any practical reasons other than wanting to rely less on Xwayland. [1]: https://github.com/veltza/st-sx

Sixel came earlier, and already fulfilled the basic requirement of "put pixels on screen in a single well-defined format" (something not even iTerm2's protocol does.) Kitty is a lot more complex: it accepts five different encodings, has three different ways to load the data, supports animations, etc. So it's no wonder only a few terminal developers had time to implement it. See also: https://github.com/veltza/st-sx/issues/1#issuecomment-190272... 5000 lines (Kitty) vs 1000 lines (Sixel) even though the Kitty patch is just a "subset".