Cysphere is an integrated social networking server for smaller virtual communities. It provides a private mailbox, public and private discussion forums, and simple file sharing, and makes it as simple as possible for users to communicate over the Web in a secure way. It includes an embedded Web server and SQL database and requires no installation or maintenance.
NetworX Non-Profits is scalable software that allows non-profit organizations to create their own branded Web site for building an online community with the the organization's donors, volunteers, and foundations. This Web site includes features for collecting donations, sending messages to registered email addresses, managing membership and volunteers, managing programs and resources, displaying a calendar of upcoming events, collecting registrations for events, letting visitors search for events, and analyzing statistics about donations, programs, and visitors.
Scalaffinity is a library providing core functionality for any social networking Web site based on ratings and recommendations. In other words, it is a generic collective intelligence library. Examples of such sites are Anobii, Rate Your Music, and Filmaffinity. It is designed to act as an out-of-the-box model for such Web applications. Nevertheless, Scalaffinity is fully customizable, extensible, and scalable. It incorporates lessons learned while reading "Collective Intelligence in Action" by Satnam Alag.
So called "me" links are a way to connect your different social network profile pages together so that services like Google's Social Graph will identify them as belonging to the same person. Adding "me" links from your blog to all your profile pages makes your blog a well connected hub in your piece of the 'net. melinks is a PyBlosxom plugin that adds a $melinks template variable.
Vikuit is an advanced social networking engine optimized for Google App Engine. It aims to possess every feature for a social network engine while remaining easy to deploy and manage. It is built with Python and is focused on running on Google App Engine (GAE). Vikuit is intended to fill the gap between software-as-a-service platforms like Ning and on-site deployments. Its key features include articles and news, support for multiple languages, groups, Google native authentication, microbloging, following a user, profiles and profile comments, comments, photo galleries, full searching, user dashboard, and recent activity. For developers, Vikuit uses themes based on jinja templates and special modules, called Vikuitlets, that provide an easy way to extend it.