PowSyBl includes a framework to design AC Optimal Power Flows. It was used to develop Open Reac, dedicated to the voltage plan initialization needed when forecasting future grid states that are very different from historical ones, and a divergence analyzer, used to identify issues in data that prevent load flow convergence. Contrary to the other OPFs of PowSyBl (Open RAO and Metrix), these OPFs natively handle the non-linear equations of static power grid models, making them particularly suited to manage voltage constraints.
The use of a tabular format makes it easy to prototype new OPFs. The roadmap involves the development of fully open-source OPFs based on Julia JuMP.