Vidyo provides high-definition, multi-party video conferencing using ordinary laptops, desktops, tablets, and smartphones. The company also provides low-cost, high definition room-based video conferencing solutions. Four Rivers led the $25M Series C round in 2010, with Menlo Ventures, Rho Ventures, and Sevin Rosen Fund participating. Vidyo was acquired by Enghouse Systems in 2019.