This first beta version doesnt offer the sidebar and gadgets, which are found in other versions of the application. Those will come later, according to a Google representative, who stated, "We focused most of our efforts on desktop search. Gadgets and sidebar are not supported, but will probably be added in the future."
The first version supports many popular versions of Linux. It comes in the form of both RPM and a DEB distribution packages. The RPM can be installed on Red Hat, Fedora, SUSE, and Mandriva distributions. The DEB will install on Debian and Ubuntu systems. The program works with both KDE and GNOME.
Officially, Google Desktop is supported on Debian 4.0, Fedora Core 6, Ubuntu 6.10, SUSE 10.1, and Red Flag 5. It should work, however, on any modern Linux that has glibc 2.3.2+ and gtk+ 2.2.0+ installed. For example, it also worked on MEPIS 6.5, even though Google doesnt mention compatibility with that distribution. At this time, it only supports PCs with 32-bit x86 compatible processors.