The Default Themes
The built in themes that ship with wordpress are pretty good starting points for a custom theme. They are well documented and built to show the full functionality of wordpress itself.
Basic Clean Themes
- A starter theme called _s, or underscores meant for hacking.
- The slightly older Toolbox theme is clean with a little bit of structure.
- Quark is a basic responsive custom theme.
- Handcrafted wordpress starter theme
- Roots with HTML5 Boilerplate, Bootstrap, Grunt, and Bower.
- Bones is an HTML5, Mobile-First starter theme for rapid WordPress development.