True is a full-featured unit-testing library for Sass. The core functionality is written in pure SassScript, so it can be used anywhere Sass is compiled. Advanced features are available with our JS test-runner integration.

OMG I just love this tool way too much.

—Hugo Giraudel

‘open source’ orgs

Sass

Core Contributor: CSS with superpowers

4 ‘open source’ episodes

2015

Herman @ OddBird

| project

Design systems streamline development, communication, and consistency – but often rely on dedicated teams and extended budgets.

2014

Accoutrement @ OddBird

| project

Design systems must be meaningful to both humans and machines Accoutrement provides Sass design-token management that improves readability and consistency, while encouraging automation.

2013

True @ OddBird

| project

True is a full-featured unit-testing library for Sass. The core functionality is written in pure SassScript, so it can be used anywhere Sass is compiled. Advanced features are available with our JS test-runner integration.

2009

Susy @ OddBird

| project

Susy is a lightweight grid-layout engine for Sass, designed to simplify and clarify responsive grid layouts without ever getting in your way. Originally released in 2009, Susy has become one of the most popular layout frameworks on the web.