RingCentral runs a one-line platform that supports multiple users for business communications. With its hosted platform, workers no longer need settle for simply having their office lines forwarded to a mobile device. Small and midsized businesses use RingCentral to connect smartphones, tablets, PCs, and desk phones from various locations and allow for communication across multiple channels, including voice, text, and fax. The company rings up more than 300,000 businesses across a wide range of industries, including advertising, finance and legal, and technology. Founded in 1999, RingCentral went public in 2013, raising $97 million.