Theme Foundation creates a suite of development tools aimed at experienced and aspiring website developers. Its products are designed to address specific technical challenges encountered during custom theme and plugin development.

Longview Theme is built for developers, featuring automated task running, multiple layout options, and several widget areas to accelerate project setup. Menu Object (mo.js) is a JavaScript library that manages complex, multi-level navigation menus across all devices and screen sizes. Cadence is a CSS library focused on establishing and maintaining consistent vertical rhythm in typography. The accompanying Cadence Check plugin allows developers to visually verify this rhythm within their admin interface by overlaying a baseline grid. The project also offers in-depth tutorials and guides covering advanced development topics.