Pie

Acquired by Google
on February 18, 2016
Collaboration
Undisclosed

LiveLoop

Acquired by Microsoft
on March 26, 2015
Collaboration
Undisclosed

Zimbra

Acquired by Yahoo
on September 17, 2007
Collaboration
$350m

PlaceWare

Acquired by Microsoft
on April 30, 2003
Collaboration
Undisclosed