Open Source Contributions

Open Tools for Developers

Giving back to the community…

We use open source software regularly in our personal and professional work, to stay up-to-date with community best practice and avoid re-inventing any wheels. We appreciate the generosity of so many in the open source community, and try to contribute back to the projects we use, and share our own tools that might be useful to others.


CSS with Superpowers

Sass is the most mature and powerful professional-grade CSS extension language in the world. It allows you to use variables, nested rules, mixins, functions, and more, all with a fully CSS-compatible syntax. Sass helps keep large stylesheets well-organized and makes it easy to share design within and across projects. Over the years, Sass has become an industry-standard for developers, and a testing ground for new features that eventually land in CSS.


The Web Framework for Perfectionists With Deadlines

Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design. Built by experienced developers, it takes care of much of the hassle of Web development, so you can focus on writing your app without needing to reinvent the wheel.


Automated Style Guides

Design systems streamline development, communication, and consistency – but often rely on dedicated teams and extended budgets. We wanted a tool that helps create and maintain living style guides & pattern libraries in an agile process, and on a budget. Herman helps you keep your development process simple – and your UX consistent – as you iterate on patterns and scale over time.

Start using Herman or hire us for design systems training.

Herman is my documentation dream come true, especially when it comes to systems design.

—Claudina Sarahe, Frontend Architect


Your Design, Our Math

Susy is a lightweight grid-layout engine for Sass, designed to simplify and clarify responsive grid layouts without ever getting in your way. You can use Susy with floats, flexbox, tables, or any other CSS technique. You’re the expert, we’re just here to make your job easier.

I like the idea of grids-on-demand, rather than a strict framework.

My experiments have left me impressed. The current state of CSS layout means that unless you like to spend a lot of time doing calculations something like Susy is really useful. The output CSS is pretty much what I’d come up with myself, which to me is the acid test for tool use.


Unit-Testing for Sass Developers

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 test-runner integration and Mocha.

Sass Accoutrement

Integrated Design-System Management in Sass

OddBird’s Accoutrement tools (now merged into a single npm package) are designed around the idea that design systems should be meaningful to both humans and machines – opening the door for automation, while improving readability. These tools integrate with Herman, our automated pattern-library generator.


Sophisticated Templating for JavaScript

A powerful markup templating language with block inheritance, autoescaping, macros, asynchronous control, and more. Heavily inspired by Jinja2, Nunjucks is fast, lean, highly performant, and extensible.


Virtual Python Environment Builder

A tool for creating isolated ‘virtual’ python environments.


Python Package Installer

The PyPA recommended tool for installing Python packages.


CSS-Authoring Framework and Sass Library

An open source CSS authoring framework which uses the Sass language to make writing and sharing stylesheets powerful and easy. Compass was the first package-manager and toolkit-sharing platform for CSS, helping popularize the Sass language – and offering powerful browser-compatability tools that changed the landscape for designers developers.

Ask us anything.

We’re happy to answer your questions, big or small. If we’re a good fit for your custom web project, we’ll offer a free in-depth assessment!

Schedule a call with Miriam