Project page: https://github.com/kovidgoyal/kitty
Why: kitty is an OpenGL-based terminal emulator with built-in support for multiplexing like tmux, tabs, truecolor, and advanced features like startup sessions. Because it uses OpenGL, it's easier on the CPU. The UI is written in Python and supports extensions like new window layouts through it.
Open source? GPL v3.0.
Latest release: https://github.com/kovidgoyal/kitty/archive/v0.3.0.tar.gz
kitty does depend on glew >= 2.0, so the update of glew and glew-devel would be blocking (T4205 and D884)