SCIP is a framework to solve constraint integer programs (CIPs) and mixed-integer nonlinear programs. In particular,
SCIP is developed together with TU Darmstadt and University of Erlangen-Nürnberg (Chair of EDOM) and has more than 500,000 lines of C code.
See the web site of SCIP for more information about licensing and to download SCIP.
Below you find for most plugin types a detailed description of how to implement and add them to SCIP.