GitBook began in mid-2014 as an open-source tool for developers to build documentation. Today we empower teams of all sizes to share knowledge and build great internal & external docs.

GitHub is a development platform inspired by the way you work.

Cash App Taxes (formerly Credit Karma Tax) is a fast, easy, 100% free way to file your federal and state taxes. Millions of people have trusted our service to file their taxes for free, and customers rated it 4.8 out of 5 stars.

Explorer is a visual way to breakdown any topic. It uses LLMs to understand your query, and generate an exhaustive page on that topic visually, allowing you to explore information in a way that search engines can't understand.