GitHub Pages - A free, static web host for open-source projects on GitHub
Slack Themes - Make your Slack pretty with custom themes
Netlify - Build, deploy and host your static site or app with a drag and drop interface and automatic delpoys from GitHub or Bitbucket
Branded Slack Themes - 1,000+ themes to customize your Slack
surge.sh - Static website hosting for front-end developers.
Rainglow Color Themes - 320+ color themes for a variety of editors and software.