Hampton Lintorn-Catlin

Hampton Lintorn-Catlin (; born 1982) is an American computer programmer, programming language inventor, and author, best known as the creator of the Sass and Haml markup languages. He is a Principal Software Engineer at Square. He was previously CTO at Thriveworks, CTO at Moovweb (acquired by Limelight Networks in 2020), and Vice President of Engineering at Rent the Runway. He was Head of Mobile at the Wikimedia Foundation, where he led development of Wikipedia's mobile website and oversaw the foundation's mobile app efforts. It is the second most popular templating language for the Ruby on Rails framework.

Sass

In 2006, Lintorn-Catlin created a style sheet language to expand on Cascading Style Sheets (CSS), used to describe presentation semantics of web pages. Lintorn-Catlin continued to work on Sass with co-designer Natalie Weizenbaum through 2008. Sass is now bundled as part of Rails.

In 2011, he co-wrote with his husband the book Pragmatic Guide to Sass, published through The Pragmatic Bookshelf.

Wikipedia Mobile Lintorn-Catlin wrote several early applications for iOS and other mobile platforms, including Dictionary!, a popular dictionary application, and iWik (later renamed iPedia), an early third-party Wikipedia browsing client for the iPhone which the Wikimedia Foundation acquired in 2008. He was subsequently hired by Wikimedia as mobile development lead, launching the official mobile website in June 2009, with a backend developed in Ruby on the Merb framework.

In March 2014, after Brendan Eich was appointed as new CEO of Mozilla, Lintorn-Catlin and his husband publicly withdrew their puzzle game from the Mozilla Marketplace in protest of Eich's earlier financial support for Proposition 8, a California ballot initiative that banned same-sex marriage, and called for a boycott of Mozilla. The couple's involvement was covered by the BBC, TechCrunch, and Vox, among others. Eich personally reached out to Lintorn-Catlin, and the two met in San Francisco in an attempt to find common ground.