https://github.com/CWSpear/bootstrap-hover-dropdown -- Bootstrap plugin that lets the dropdown components activate on mouse hover.
http://jhollingworth.github.io/bootstrap-wysihtml5/ -- This is "a javascript plugin that makes it easy to create simple, beautiful wysiwyg editors with the help of wysihtml5 and Twitter Bootstrap."
http://pikock.github.io/bootstrap-magic/ - Bootstrap 3 theme generator.
http://html5-ninja.com/preview/index/5#.URI96mdRbLv -- Video player for Bootstrap
http://bootstraptor.com/ -- BOOTSTRAP 3.0. TEMPLATES STARTER KIT START DEVELOP RESPONSIVE TEMPLATES WITH BOOTSTRAP 3.0. EXTREMELY FASTER Ready to use responsive prototypes, templates and themes bundle -- This is a PAID PRODUCT
http://paintstrap.com/ - Generates Bootstrap themes using Adobe kuler / COLOURlovers color scheme. You don't have to have color sense, just click and choose.
http://www.bootstrapthemeroller.com/ -- Another theme builder
http://blueimp.github.io/Bootstrap-Image-Gallery/ -- "Bootstrap Image Gallery is an extension to blueimp Gallery, a touch-enabled, responsive and customizable image & video gallery. It displays images and videos in the modal dialog of the Bootstrap framework, features swipe, mouse and keyboard navigation, transition effects, fullscreen support and on-demand content loading and can be extended to display additional content types."
http://www.jasonbutz.info/bootstrap-lightbox/ -- Lightboxes for Bootstrap
http://bootstrap-arrows.iarfhlaith.com/ -- Arrows for Bootstrap
http://tableclothjs.com/ -- Styling tables in Bootstrap
https://jetstrap.com/ -- Build UI's using Bootstrap -- They also make http://ionicframework.com/ which is a framework for making HTML5 Mobile apps
http://exacttarget.github.io/fuelux/ -- Additional components for Bootstrap
http://www.eyecon.ro/bootstrap-datepicker/
http://alefeuvre.github.io/foundation-grid-displayer/ -- Helps debug bootstrap layouts
http://www.divshot.com/ -- A platform for building and hosting static web apps. What they mean is http://www.staticapps.org/