DX Manager is a graphical editor and patch manager for classic Yamaha FM synthesisers such as the DX7.
DXM4 is the current release of DX Manager. It adds new support for hardware controllers and includes an editor for the Behringer BCR2000 controller.
SY Manager is the only full-featured graphical editor and librarian for the Yamaha SY77/SY99 synthesisers.
SYM3 supports most patch types including voice, multi, pan, microtuning and system setup.