Cyphesis is the main WorldForge server. It is also designed by be used as an AI subsystem in a network of distributed servers. It provides everything needed in order to run a virtual world, This includes a terrain engine based on the Mercator library, a persistence system based on PostgreSQL, an AI engine using goal trees implemented in Python as well as a world simulation also using Python.
The latest version is 0.6.2, which was released on Friday the 25th of October 2013. It can be downloaded from the WorldForge download site using the links below.
You can find a complete history of cyphesis releases by going to the Freecode homepage for cyphesis.
If you're interested in building your own world we encourage you to run a local instance of Cyphesis. By running it locally you can effortless connect with Ember in administrative mode, with the ability to fully alter the world. This is demonstrated in this short video.
By running locally you also have access to a lot of administrative tools which will help you with keeping backups of the world, inspecting code and so on.