The GUI framework we use for ST and SM is fully custom. We use GTK, Cocoa and Win32 for platform integration and custom software/OpenGL rendering (with a little help from Skis).

Thanks! Not open source I presume? Would be interested to learn more

t's interface is unstable, undocumented and it tightly integrates with the rest of our codebase; even if it was open source it would not be usable to anyone.

Noted, I appreciate the response. In any case, congrats, it works really, really well

Native UI libraries using Google’s Skia graphics engine → https://skia.org/docs/

OpenGL → https://www.sublimetext.com/blog/articles/hardware-accelerat...