Evan Williams, American businessman, co-founded Twitter and Pyra Labs

Evan Clark Williams is an American Internet entrepreneur. He is a co-founder of Twitter, and was its CEO from 2008 to 2010, and a member of its board from 2007 to 2019. He founded Blogger and Medium. In 2014, he co-founded the venture capital firm Obvious Ventures. As of May 2025, his net worth is estimated at US$2 billion, according to Forbes.

Twitter, officially known as X since 2023, is an American microblogging and social networking service. It is one of the world's largest social media platforms and one of the most-visited websites. Users can share short text messages, images, and videos in short posts commonly known as "tweets" and like other users' content. The platform also includes direct messaging, video and audio calling, bookmarks, lists, communities, a chatbot (Grok), job search, and Spaces, a social audio feature. Users can vote on context added by approved users using the Community Notes feature.

Pyra Labs is a subsidiary of Google (Alphabet) that created the Blogger service in 1999. Google acquired Pyra Labs in 2003.