Ads Servicing Platform
1.Sponsorennetzwerk
http:///projects/sponsorennetzw/
Advertising thousands of websites. Comprises tools for configuration. Webmaster and advertiser can watch their statistics. Export statistics as pdf or email. Manage webmaster, sponsors, advertising modules, layouts admin tools, email and pdf layout.

2.OpenX Community
http://www.
Open Source ad server you can host yourself and build your own custom features on top of.
OpenX is actually ad script for your own websites. However the script is so powerful, I believe you can tweak it to serve ads network.

3.Adhere Mobile Ad Server
http://adhere./adhere-adserver
Adhere Ad Server is a very powerful tool that specializes in serving ads for mobile advertising. Adhere is the first open-source ad server in the market.
Adhere is initially built upon from OpenX for mobile advertising.

4.VertEasy Advertisement Tracking
http:///projects/verteasy/
VertEasy is an advertisement tracking and management web application written in PHP. Companies who have clients for which they conduct advertising campaigns, can allows their clients member’s to register and place their adverts quickly and easily.

Dating / Personals / Social Site Script
osDate
http://www./s_free_dating_system.htm
osDate dating and matchmaking script fully integrates with major bulletin boards (phpBB, vBulletin, etc.) and FlashChat, and provides several payment modules, multiple skins, and free upgrades.

UCenter Home (UCHome)
http:///foro/forumdisplay.php?fid=60
From Chinese developer that also built discuz bulletin board script, there is not much known about this script, but the user experience seems to be quite positive.

Boonex Dolphin
http://www./
The only “all-in-one” software paclage for creating your own social network, web-community or dating site. All modules, players, chat, messenger and apps included. All open-source, downloadable, and free.

WordPress with Buddypress
http://www./
Not forgetting to mention my favorit: the best CMS/blogging system combined social networking plugin. It might need a few tweaks to work as you want, but this is one of the most reliable.

NetworX
http://www.
NetworX is social networking software that allows you to create your own private community for anything that interest you. NetworX is about personalizing your community.

Beatz
http:///Products/Beatz
Beatz is free opensource online social networking software that allows you to start your own music community just like Pure Volume and RBS is a free to use unique bidding system, developed by Cogzidel Technologies


Good OpenSource Index site: http://www.

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