Bjørn Klinggaard
bPopup is a lightweight jQuery modal popup plugin (only 1.49KB gzipped). It doesn't create or style your popup but provides you with all the logic like centering, modal overlay, events and more. It gives you a lot of opportunities to customize so it will fit your needs.
Ilya Makarov
Flat, responsive, lightweight, easy customizable modal window plugin with declarative state notation and hash tracking.