MAME is now Free and Open Source Software

The MAME (Multiple Arcade Machine Emulator) project has announced a license change,moving from the old, unique "MAME License" to the GNU GPLv2-or-laterfor the full codebase, with many individual components available underthe 3-clause BSD License. The announcement notes that a considerableeffort went into the relicensing process: "We have spent thelast 10 months trying to contact all people that contributed to MAMEas developers and external contributors and get information aboutdesired license." The old license[Wayback link] had prohibited commercial sale and use.