Initial listing of Vendors - these will be fleshed out into a full contact listing and summary of the company and products.

www.advancinginsights.com
www.affinitycircles.com
www.alstrasoft.com/efriends.htm
www.askme.com
www.atlassian.com
www.automattic.com
www.awarenessnetworks.com
www.bea.com
www.blogtronix.com
www.blueKiwi.com
www.boonex.com
www.brainkeeper.com
www.brightcom.com
www.broadbandmechanics.com
www.cerado.com
www.circleup.com
www.cisco.com
www.cogenz.com
www.collectivex.com
www.communispace.com
www.communityserver.org
www.conenza.com
www.connectbeam.com
www.contactneworks.com
www.converdge.com
www.corespeed.com
www.crowdfactory.com
www.customervision.com
www.cyn.in
www.davenw.com
www.developer.berlios.de/projects/milaninegw
www.drupal.com
www.dzoic.com
www.elggspaces.com
www.engagd.com
www.etelos.com
www.etouch.net
www.ezboard.com
www.fiveacross.com
www.foldera.com
www.friendsite.com
www.goingon.com
www.golightly.com
www.google.com
www.groupmembersinternational.com
www.grovesite.com
www.iUpload.com
www.ibm.com
www.intensil.com
www.intronetworks.com
www.invisionboard.com
www.invisionpower.com
www.jigsaw.com
www.jivesoftware.com
www.joomla.org
www.jotspot.com
www.kapowtech.com
www.kickapps.com
www.knownow.com
www.krawlernetworks.com
www.kwiqq.com
www.leveragesoftware.com
www.lindenlabs.com
www.linkedin.com
www.lithium.com
www.livejournal.com
www.liveworld.com
www.mediawiki.com
www.microsoft.com
www.mindquarry.com
www.mindtouch.com
www.momo-it.com
www.morphix.com
www.movabletype.com
www.multicity.com
www.myworklight.com
www.mzinga.com
www.near-time.net
www.neighborhoodamerica.com
www.newsgator.com
www.ning.com
www.nucleuscms.org
www.octopz.com
www.omnifuse.com
www.onesite.com
www.openteams.com
www.optaros.com
www.oracle.com
www.orgnet.com
www.phpbb.com
www.phpfox.com
www.phpizabi.net
www.plaxo.com
www.pluck.com
www.pollstream.com
www.pringo.com
www.prospero.com
www.ramius.net
www.rollerweblogger.org
www.rsitez.com
www.s9y.org
www.satmetrix.com
www.selectminds.com
www.simplefeed.com
www.sitescape.com
www.sixapart.com
www.smallworldlabs.com
www.socialnetworkserver.com
www.socialplatform.com
www.socialtext.com
www.sourceforge.com
www.spartasocialnetworks.com
www.spartasocialnetworks.com
www.spikesource.com
www.spoke.com
www.sun.com
www.systemone.com
www.tacit.com
www.talis.com
www.telligent.com
www.tomoye.com
www.tractionsoftware.com
www.trampolinesystems.com
www.twiki.org
www.twitter.com
www.userplane.com
www.vbulletin.com
www.veodia.com
www.veodia.com
www.vibecapital.com
www.vignette.com
www.villageengine.com
www.visiblepath.com
www.webcrossing.com
www.wildbit.com
www.wordpress.com
www.worlddatingpartners.com
www.worldweb.de
www.xwiki.com
www.zoho.com
www.zoominfo.com