All Open Office
versions after the version 2 provide Sinhala Unicode support. Open
Office works perfectly not only on all GNU Linux flavors, but also on
XP and Vista.
Microsoft Office 2003
If the Sinhala Kit is installed for Windows XP, you can use all applications in Microsoft Office 2003. However ordering (alphabetically) is not possible. A list of problems reported in MS Office 2003 applications are listed here.
Sinhala Unicode works much better on MS Office 2003 when it is run on Windows Vista
Microsoft Office 2007
MS Office 2007 works correctly with Sinhala Unicode on Windows XP and Windows Vista
However ordering (alphabetically) is not possible; but ICTA and Microsoft are working to provide this support for Windows Vista in 2007.