Box Social is a piece of Open Source Social Networking software written in C# for the Mono .net framework platform. The project exists to develop the software that powers ZinZam, but can be freely used by anyone. In fact you are using it right now. Box Social doesn't currently make formal releases, but there is an SVN repository online that you can download the current state of the software from.

A open source community driven news ASP.NET web application. Similar to Digg.

Web 2.0 OPEN SOURCE bookmarking system, both social (with tags) and private (with folders). Import and export your bookmarks from multiple browsers. Admin management section with SPAM protection, translations, bookmarklets, Firefox extension, RSS feeds, and more!

A group blog theme for short update messages, inspired by Twitter. Featuring: Hassle-free posting from the front page. Perfect for group blogging, or as a liveblog theme...

General Features - Secure Login Optional Email Validation Optional CAPTCHA Registration Friends List Replies and Mentions Direct Messages User Customizable Public Profiles Comments Email Boxes Limited Mobile Messaging Support Emoticons Hyperlinking User...

Light Portal is an Ajax and Java based Open Source Portal Server and Social Collaboration Software. Besides AJAX Portal UI Application, Light Portal can also supports other RIAs (Flex, Silverlight etc) and Mobile applications (iPhone, Android, Blackberry etc.) with uniform portal server services API.

• Members can buy, sell from same account.
• Buy/sell audio tracks and albums.
• Buy/sell video tracks and albums.
• Advanced music search option with multiple filters.
• Album Rating; Keep your postal live and interesting with member ratings.
• Browse through audio, video albums with the help of additional filters.
• Supports any payment currency supported by paypal.
• User comments, visitors can post their comments on each album.
• Abuse reports; Keep your portal clean allowing users to post abuse reports for inappropriate content.
• Captcha verification; Reduce spam posts with image verification for all public posts.
• Light box; Stylish and fast image slide shows.
• Automated paypal money deposit to instantly credit funds to member account.
• Flexible Account Types: Choose whether to allow users to sell and purchase tracks and albums with a single account.
• Detailed statistics to help members to view the old sales and purchase details.
• Allows the buyers to store music for a prolonged time period. Buyers can download the music anytime they want.
• You decide the seller and your share. Complete monetary control.
• Fully template driven, you can modify the page designs very easily.

ThePeoplesFeed collects RSS feeds to get the latest news articles from multiple different news outlets. We combine those news articles from many sources into one list. This helps you by giving you a more "whole" picture of the news world. Then, TPF sorts the news articles from all different sources by the popularity of the article. Whenever a user views a feed on the TPF, we (anonymously) collect information about the article that the consumer has viewed. We can then combine this information across lots of consumers and articles and determine which news sources and articles the "people" love.

GateIn portal is a merge of two mature projects that have been around for a while, JBoss Portal and eXo Portal. It takes the best of both into a single new project. The aim is to provide both an intuitive portal to use as-is and a portal framework to build upon depending on your needs.

BuddyPress will extend WordPress MU and bring social networking features to a new or existing installation...

gnizr™ (gÉ™-nÄ«zÉ™r) is an open source application for social bookmarking and web mashup. It is easy to use gnizr to create a personalized del.icio.us-like portal for a group of friends and colleagues to store, classify and share information, and to mash-it-up with information about location.