Collaborate with the gvSIG project. Any contribution is very good for the project, and it helps to make gvSIG sustainable and allows it to continue growing. For contributions you can access here.
gvSIG 2.5 (First testing build)
All-included version (recommended):
RUN (Linux 64 bits) (590 MB)
RUN (Linux 32 bits) (588 MB)
MAC OS X 64 bits: Not available at this moment, it will be available from RC1 release.