Zagster (est. in 2007) was a venture-funded startup company based in Boston, Massachusetts that designed, built and operated bike sharing programs for cities, universities, corporate campuses, hotels, and residential communities across the United States. As of July 2019, it operated over 200 bike sharing programs. The bicycle program was suspended in March 2020 due to the COVID-19 pandemic, and then the company terminated all operations in June 2020.