Friendster
Friendster is a social gaming site that is based in Kuala Lumpur, Malaysia. The company now operates mainly from three Asian countries; namely, the Philippines, Malaysia and Singapore. It was previously known as a social networking website. Before the site was redesigned, the service allowed users to contact other members, maintain those contacts, and share online content and media with those contacts. The website was also used for dating and discovering new events, bands, and hobbies. Users could share videos, photos, messages and comments with other members via their profile and their network. It was considered one of the original and even the "grandaddy" of social networks. The service became popular in Southeast Asia and is a major site in that region of the world.

osDate
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.
pH7 Social Dating CMS
"pH7 Social Dating CMS" is a new and original PHP Dating software. With this great open source software you can create your own dating service or social networking website. It includes a variety of modules as Affiliate, Hot or Not, Chat rooms, Forums, Chatroulette, Instant messaging, Advanced...
SocialScript - Powerful Social Networking Script
SocialScript is a powerful custom social networking software that lets you start your own website for any type of online social community within minutes. It is a fully automated solution suitable for individuals and businesses, packed with various features and plugins, search engine friendly and...