Microsoft

Live Search 2.5
Live Search for Windows Mobile Smartphone helps you to find and discover places, decide where to go, and easily get to your destination.

SQL Server 2005 Mobile Edition
MS SQL Server 2005 Mobile Edition is the compact database for rapidly developing applications in both native mode and the .NET Compact Framework.

ActiveSync 4.5
Among other features, ActiveSync 4.5 (build 5096) extends support for smartphones with Windows Mobile 6 and 6.1 and drops support of MS Outlook 2000.

ActiveSync 4.2
ActiveSync is a data synchronization program developed by Microsoft to synchronize data between smartphones and Windows desktops or Exchange servers.