Gusto (previously ZenPayRoll) is payroll software for small businesses. It helps companies to onboard, pay, insure and support their hardworking team. The platform claims that over 100,000 small businesses and teams trust and use their services. In 2014, Gust raised $20M in Series A, led by General Catalyst and Kleiner Perkins. Gusto has raised a total of $516.1M in funding over 11 rounds.