Vimbed (GitHub: ardagnir / vimbed, License: MIT) by James Kolb is a script to make it easier to run Vim in the background when you want to embed Vim in another program.
It's used in Pterosaur for Firefox and Chalcogen for Atom.
Kerbal Space Program Syntax
If you play Kerbal Space Program, then you might like Kerbal Space Program Syntax (GitHub: mic47 / KSP-Syntax, License: MIT). It adds support for
.craft files and save files.