ActiveSync - Computer Definition
Software from Microsoft that is used to synchronize mail, calendars, contacts and other data between desktop PCs and mobile devices such as smartphones and tablets. ActiveSync is the synchronization component in the Microsoft Exchange mail system, and it is also used to update programmable home theater remote controls. Introduced in 1996 as H/PC Explorer, it was designed to support Windows CE devices. Renamed Windows CE Services in 1997, it was renamed again to ActiveSync in 1999.