RSBAC (http://www.rsbac.de/)

RSBAC is a control framework
Generalized Framework for Access Control (GFAC)
You can combine model from MAC, RC (Role), ACL... 
You can write your own model 

Shell tools (rsbac_*) and dialog tools 

Similarity with SELinux and opposition (f.example : extended API calls)

Future versus LSM ? Integration ?