To learn more, read the contest rules. Please do not try to write voting scripts or game the contest for your app, otherwise you risk disqualification.

109
votes
web2py
107
votes
ClockingIT
104
votes
elgg
103
votes
XWiki
102
votes
eGroupware
97
votes
HumHub
97
votes
WebSVN
96
votes
OTRS
96
votes
Etherpad
91
votes
Sentry