You can get them at the following…
GREarth: http://www.grlevelx.com/grearth/
All other software: http://www.grlevelx.com/owners/
GR2AE 2.xx, GR2AE 3.x.x.x and GR3 2.xx update links are also provided in a pinned post in the users group. We will not share update links publicly on this website, with respect to Gibson Ridge.
We will also not post beta update links, as beta feedback needs to happen on the owner forums. Members and group admin may post news informing users of such a beta update, but we will not support beta copies in the group as they are considered unstable.