In 2011 Muirhead co-founded Rightster with Tabitha Goldstaub, a software company that automates the end-to-end lifecycle for content owners, publishers, and marketers of digital video content including distribution, marketing, and monetisation of the content. Content partners for the company came from a broad range of industries, from London Fashion Week to ITN Productions and "The Guardian" newspaper. The company provided rights management through a cloud-based platform in addition to live streaming, audience development and YouTube/Facebook management services. Events that have streamed on Rightster have included the Wedding of Prince William and Catherine Middleton and the Leveson Inquiry. By March 2012, monthly video views of Rightster's clients grew from approximately one million views per month to 100 million views per month. Its staff also quadrupled during that time, and has offices in London, New York City, and Delhi. On 10 May 2016, it was announced that the company was relaunching under the name Brave Bison.