IPOPT Solver for Nonlinear Programming
The IPOPT solver is an open source Nonlinear Programming (NLP) solver. IPOPT is an Interior Point Optimizer for large-scale nonlinear optimization.
IPOPT is developed by Andreas Wächter and Carl Laird, and maintained by the IPOPT team at COIN-OR.
The link between AIMMS and IPOPT is also open source and part of the AIMMSlinks project at COIN-OR.