massCode - A free and open source code snippets manager for developers.
Git Sketch Plugin - Version control for designers
CodeMyUI - Handpicked code snippets you can use in your web projects
Anima App - Design, get feedback, convert to code, publish, iterate.
GitHub Gist - Gist is a simple way to share snippets and pastes with others.
Marvel for Sketch - Sync, play and record prototypes in Sketch!