BrowserStack Closes $50M Series A Investment and Announces North American HeadquartersAccel Gains Minority Equity Stake, Adds Ryan Sweeney to Board SAN FRANCISCO, January 30, 2018-- BrowserStack, the most reliable web and mobile browser testing platform on the market, today announced a $50 million Series A investment from Accel for a minority equity position. The investment will fuel BrowserStack's continued commitment to being the testing infrastructure for the internet and allows the company to expand its world-class team and raise global brand awareness.