LiveStreet CMS
Free (GPLv2) engine for blog-social networks.The project is implemented using OOP on PHP5 + MySQL5 and is built on the basis of the MVC model, which makes it easy to change both the logic of the engine behavior and the appearance.
Main features
- Using UTF-8
- Maintaining personal blogs
- Ability to create collective blogs
- System of rating blogs, topics, comments, users
- Voting system for Blogs, topics, comments, users
- Possibility to add topics to favorites
- Auto-tagging
- Collective internal mail
- Access control system (ACL) to various network capabilities (blog creation, voting, etc.)
- The ability to create a private site
- The system of invites
- Topic-link
- Topics polls
- Administer your blogs
- Assign moderators blogs
- Notification Settings on email
Pligg
An open source Content Management System (CMS) that can be downloaded and used for free.Invites visitors to register so they can submit their information and contact other users.
Especially useful if you are a programmer.
Pligg CMS is based on an open source PHP and MySQL technology, so it can be installed on most webhosts and used with a relatively small budget.BuddyPress
Here it is the engine for creating a social network.Authors are Automattic, the creators of the WordPress engine. Now everyone can have their own social network. Simpler, of course, besides this is only the first version and will continue to evolve,