Founded in 2005, HopStop was an online transit guide that offered users subway, bus, biking, taxi, train, and walking directions in real time. In addition to its website, it also had apps for Android, Apple and Windows devices. It was arguably the most popular digital transit guide in its heyday and was even named to Inc Magazine's top 100 fastest growing software companies in 2011.
HopStop was acquired by Apple in July 2013, who dropped support for Windows Phones days later, and then Android devices that September. These moves naturally removed a lot of HopStop's userbase. In October of 2015, Apple ended HopStop completely (both app and website) and instead used an iOS 9 update to supply Apple Maps with transit directions.