Roku announced today that it has sold 10 million of its set-top boxes in the United States, claiming itself as “the most popular choice among streaming players”. Launched in May 2008, Roku caught the rising tide of OTT market and has been standing strong against a tsunami of formidable competitors, including Apple TV, Amazon Fire TV, and Google Chromecast. Seeking to expand its revenue stream, Roku has even teamed up with manufacturers to produce TV sets with built-in Roku service.