Fredit is a project mainly written in C and C++, based on the GPL-2.0 license.
A fresh editor
I am starting Fredit because I like Vim, but the Vim code is not very friendly. Emacs has a more active community, but Emacs is just too bloated. More importantly, neither Vim or Emacs have what I believe the right architecture for a text editor. I also find it shocking that the core code and architecture of these two editors have not changed in almost two decades now. I don't know about you, but I personally am ready for a change -- a new editor with a better design and potential to fully exploit contemporary hardware and software.
Yzis was going in the right direction, but that project is dead now.