CodeKeep - Codekeep lets you store and share bits of code and text with other users. Snippets can be organized into folders/labels for instant reuse.
Creative Tim - Awesome Bootstrap freebies and templates to build better websites
thiscodeWorks - Save and share code that works
CodeMyUI - Handpicked code snippets you can use in your web projects
Refactor.io - Share your code instantly for refactoring and code review
30 seconds of code - JS snippets that you can understand in 30 seconds or less.