For developer who looking for starter themes for developer their theme, here I had collect some of the best starter theme for you to develop your themes. If you are an advanced user, some of these clean and minimalist themes may be what you are looking for. Check out those starter theme below.
WP Flex is a blank, responsive, WordPress theme boilerplate adhering to best practices and requirements set forth by the official WordPress Codex and theme review guidelines. Also makes a great starter theme for any of your WordPress theming needs.
Underscores come with minimal functions and styles that’s great for starting point for developing your own theme. Also Underscores is build by from most developer from automattic.
Built around the latest in Web Standards, Bones is a rock solid foundation to start any WordPress project. Keep what you need, remove what you don’t. It’s totally up to you.
Sage is a WordPress starter theme based on HTML5 Boilerplate, gulp, Bower, and Bootstrap, that will help you make better themes. Sage is develop by roots.
Big Blank Theme is a blank responsive theme for WordPress, with semantic HTML5 code and a very minimal CSS styling. This is not a naked or barebone theme, but a clean starting boilerplate for a more complex theme development.
This is a starter WordPress theme for DEVELOPERS using Twitter Bootstrap 3.3.4, you can make child themes that run on top of this theme.