neap is a neat X11 workspace pager unintrusive and light that runs in the notification area (i.e. systray) of your panel. neap follows freedesktop specifications.
neap is already part of many major Linux distros such as Debian, OpenSuSE and ArchLinux. See the neap wiki for more info about installation, configuration and collaboration.
Previously, neap has been hosted at Google Code.
You can get the latest neap release in the download section.
In the bottom right corner of the screen, you see (from right to left) a clock and a battery status indicator, followed by two systray applications: my network manager and, finally, neap, currently showing the 2nd of my four virtual desktops: