Which software is compatible with 64-bit Windows 7?
Most software that was written from when Windows 98 came out can be made to work. Windows can run older software in compatibility mode. The only software with which you have no chance at all is very old software written in 16 bit code, the 64 bit version of Windows doesn’t support 16 bit code. Most 16 bit software is written for Windows 95, Windows 3.1 or MS-DOS, but much of the software written for Windows 95 is in 32 bit code anyway which is supported.