Complex sentence: In July, 2006 the VSTO (Visual Studio Tools for Office) edition of Add-in Express was released and Add-in Express became available in three editions:.NET, VSTO, and VCL.
Split into simpler sentences: In July, 2006 the VSTO (Visual Studio Tools for Office) edition of Add-in Express was released. Currently, Add-in Express is available in three editions:.NET, VSTO, and VCL.