bPopup

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.

Sco.js library

Javascript extensions for Twitter Bootstrap. Rewrites bootstrap tabs, collapse, modal, tooltip components for easier usage and provides more plugins for your coding pleasure

Featherlight – ultra slim jQuery lightbox

Featherlight is a very lightweight jQuery lightbox plugin. It’s simple yet flexible and easy to use. Featherlight has minimal css and uses no inline styles, everything is name-spaced, it’s completely customizable via configuration object and offers image, ajax and iframe support out of the box. Featherlights small footprint weights less than 4kB – in total.

OmniWindow

Extremely customizable modal window plugin for jQuery with 150 lines of code, written specially for programmers.

Boxer

A jQuery plugin for displaying images, videos or content in a modal overlay. Part of the Formstone Library.

Mikes Modal Library

This is a library for creating a facebook like modal box to be used. It features an image on the left and content on the right. The image scales to the largest size possible while still fiting in your monitors resultion.

Vanillabox

Simple, modern Lightbox-like plugin for jQuery

jQuery Popdown

A super simple jQuery popdown dialog plugin

jQuery jsPanel

jQuery plugin to create highly configurable multifunctional floating panels for use in backend solutions and other web applications. Also usable as modal panel, tooltip or hint. With built in support for bootstrap, right-to-left text direction and more …

plainModal

The simple jQuery Plugin for customizable modal windows.