[ Thanks to daria42
for this link. ]
“Evolution, an open-source application which mirrors Microsoft’s
Outlook, has been successfully compiled on the Windows platform.
However, a version for the masses is still in the works.“Evolution was developed by open-source company Ximian, which
was acquired by Novell in August 2003. It’s widely seen as a
possible threat to Outlook due to its ability to integrate well
with Microsoft’s Exchange server…”