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Rhok.org
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Tigweb.org
Assembla.com
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Jazz.net
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Cnm.org
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Collab.net
Teamdesk.net
Justproto.com
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Longjump.com
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Pix-agency.com
Ilink-systems.com
Tallan.com
Quora.com
Researchgate.net
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Cnx.org
Jivesoftware.com
Groupsite.com
Bigtent.com
Ideascale.com
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Mixxt.com
Openideo.com
Ourstory.com
Govloop.com
Jovoto.com
Kompoz.com
Socialtext.net
Forums.com
Complore.com
Collaborativeconsumption.com
Circleup.com
Forumone.com
Openwetware.org
Forumopolis.com
Nabuur.com
Pledgebank.com
Svnkit.com