Brandpad - Host your brand guidelines and assets in the cloud
Brand.ai - Create a style guide & integrate with Sketch, Slack, & Gulp
Frontify Style Guide - Create beautiful web-based brand manuals in minutes
Overlay - Overlay transforms Figma and Sketch designs into reusable React, Vue.js components
Brandy - Keep brand assets in sync with your team and right at your fingertips for quick use.
Styleguide - A tool to make creating and maintaining styleguides easy