General Purpose Coarse-Grained Force Field 
Looking for a way to model foldable Martini proteins? Try Go Martini, a clever combination of Martini and Go potentials developed by the group of Theodorakis. Further details on the method can be found in the publication:
A.B. Poma, M. Cieplak, P.E. Theodorakis, JCTC, 13:1366–1374, 2017. DOI:10.1021/acs.jctc.6b00986