x11-clocks
Plasma-applet-adjustableclock
Highly configurable clock plasmoid for KDE4
Xtimer
A simple digital timer for X11
Xfce4-timer-plugin
A timer plugin for Xfce
Xfce4-timer-out-plugin
A timer out plugin for Xfce
Xdaliclock
A rather neat animated clock
Xfce4-datetime-plugin
A datetime plugin for Xfce
Xclock
Analog and digital clock for X
Xalarm
An X based alarm clock
Wmtimer
Multi-Function timer dockapp for WindowMaker
Wmitime
A clock dockapp that shows the date, time, and internet time
