Gramps 3.4 and earlier.
Any files listed here may be not suitable for normal every day use! (My lawyer advised me to say that, but many people are using this and have reported no problems at all.)
The Gramps "software bundle" for Windows or GrampsAIO is an all-in-one (a.k.a. "AIO") installation package of Gramps which includes all dependencies for the Windows platform.
Gramps AIO (32bit)
Gramps AIO (64bit)