Clockface is a clock-like timepicker for Bootstrap. It can be used as Input, Component and Inline style.
ClockPicker is a clock-style timepicker for Bootstrap (or jQuery).
flipCountDown is a jQuery clock / timer / countdown plugin in retro flip-count down style.
For sizing, it's possible to use Bootstrap sizes notation.
Nice tutorial about How to Make a Digital Clock with jQuery and CSS3. Soon functionality for setting alarms and playing them back with HTML5 audio ll be add.
FlipClock.js is a jQuery plugin with CSS3 animations to add counter, timer and clock with smooth flip effect.
timeTo is an easy-to-use and customizable jQuery plugin for creating countdown timers or digital clocks with a lot of options and callback support.
jDigiClock is a jQuery plugin inspired from HTC Hero Clock Widget.