CEL is a library built on top of the Crystal Space SDK to provide a set of commonly used abstractions to specifically game programmers boosting productivity.
Written in C++, CEL can also be interacted with via Python or Xml. Using CELStart it is also not neccessary to use C++. This means that since the base code is C++, CEL is fast while being extremely easy to use yet, very simple if Python and/or Xml are used.
The first place to start is the manual.
Latest Release (1.0rc1)
The latest CEL release can by find on the sourceforge project page in the downloads section.
CEL comes prepackaged with a number of example applications which can be found under apps/ in the CEL package.