Sage (WordPress starter theme) Alternatives

Wordless is an opinionated WordPress plugin that dramatically speeds up and enhances your custom themes creation. Some of its features are:

Hi. I'm a starter theme called _s, or underscores, if you like. I'm a theme meant for hacking so don't use me as a Parent Theme. Instead try turning me into the next, most awesome, WordPress theme out there. That's what I'm here for.

Timber based WordPress starter theme.

JointsWP is a blank WordPress theme built with Foundation 6, giving you all the power and flexibility you need to build complex, mobile friendly websites without starting from scratch.

FoundationPress is a starter-theme for WordPress based on Foundation 6, the most advanced responsive (mobile-first) framework in the world. The purpose of FoundationPress, is to act as a small and handy toolbox that contains the essentials needed to build any design.

Plugin to write WordPress themes w object-oriented code and the Twig Template Engine.

The Themosis framework is a tool aimed to WordPress developers of any levels. But the better WordPress and PHP knowledge you have the easier it is to work with.

The framework that knocks WordPress into shape.

The HTML5 Blank WordPress theme offers annotated support throughout the code, basic & advanced functions, very minimal mark-up and extremely neat & easy to read code.