General Purpose Coarse-Grained Force Field 
Boyd and May have deleloped a new tool called BUMPy. The tool allows you to create curved lipid bilayers, combining flexibility of shape, force field, model resolution, and bilayer composition. The tool is avialable online. For details, including many Martini based applications, check the paper: Boyd & May, JCTC, in press, DOI:10.1021/acs.jctc.8b00765