Bootstrap plugin for on-place confirm boxes using Popover
Native AngularJS (Angular) directives for Bootstrap. Smaller
footprint (20kB gzipped), no 3rd party JS dependencies (jQuery,
bootstrap JS) required. Demo
The Bootstrap team has a comprehensive guide for migrating to Bootstrap v4. However, there is a very nifty tool from the community, that allows you to drop in a piece of code and convert it to the Bootstrap v4 equivalent.
This week, Bootstrap 4.1 was released and includes some bug fixes and updated documentation.
RTL edition of bootstrap v4 for rtl languages like Farsi and Arabic http://getbootstrap.com
The .panel, thumbnail, and .well classes have been replaced by .card in Bootstrap 4.
There are currently 35 themes and templates available on Start Bootstrap
A simple lightbox plugin based on the bootstrap modal plugin. Demo
شاید بتوان گفت وب سایت www.layoutit.com بهترین ادیتور جهت bootstrap میباشد 
که دارای تمامی عناصر میباشد که با Drag &Drop میتوانید صفحه مدنظر خود را طراحی نمایید و دانلود نمایید
BOOTFLAT is an open source Flat UI KIT based on Bootstrap 3.2.0 CSS framework.
