wmhdplop is a dockapp for WindowMaker or any window manager/desktop environment that handles dockapps. It monitors IDE and SCSI hard drive activity by sending visual stimuli each time /dev/hdx writes or reads anything. It can also display the temperatures if hddtemp is running as a daemon. The gkrellm port of wmhdplop (gkhdplop) is also provided.
Pop3eye is a POP3 email notifier. It can be placed in a "dock", or use a regular or undecorated popup window. Regular expressions are used to filter email. It can display up to 20 partial lines of the email body in a tooltip window. It can monitor and display an unlimited number of accounts. You can choose to show messages using regular expressions, or delete messages from the server.