GeekTool

GeekTool is a PrefPane (System Preferences module) for Mac OS 10.5. It let you display on your desktop different kind of informations, provided 3 default plugins :

File plugin to monitor MacOS X activity with /var/log/system.log, or any file that you want to follow.Shell mode to launch custom scripts or commands like "df" to check space left on filesystems, "uptime" to monitor load of your machine... Finally, Image mode helps you monitor bandwith usage, CPU loads, memory availability of your server, via tools like MRTG

DateLine

DateLine displays a linear calendar on your Mac desktop which provides easy access to iCal and your events. The appearance of the DateLine is endlessly customizable and themeable.

Interfaccia CrystalClear

CrystalClear Interface è una splendida interfaccia utente per coloro che la pensano completamente diversa. È per chi vuole cambiare il tema Mac, senza bisogno di codice, e puoi ancora creare il tuo tema.