Gisto is a code snippet manager that runs on GitHub Gists and adds additional features such as searching, tagging and sharing gists while including a rich code editor. All your data is stored on GitHub and you can access it from GitHub Gists at any time with changes carrying over to Gisto.
Changelog

Gisto includes Ace. A rich code editor for editing your Gists on the go and includes features such as syntax highlighting auto-completion emmet and more.

Gists can be found quickly using our search and can be filtered by gist description, file names, tags and more.

Gisto allows you to tag Gists with custom tags to help you find your Gists easily.
Gisto started by fulfilling a lack of a syntax highlighted and cloud synchronized code snippet solution.
Gisto is developed by a team of two web developers on their spare time.
We appreciate any suggestions or contributions to make Gisto better.
Gisto is built using the open web technologies using several open source projects such as AngularJS, nw.js, Ace Editor and many more
LATEST VERSION: 0.3.1 - RELEASED: 2015-31-05
via Homebrew cask:
SHELL$ brew cask install gistovia Archlinux AUR:
SHELL$ yaourt -S gistovia SlackBuilds.org (Slackware):
SHELL# sbopkg -i gisto