All the elements are just default bootstrap markup in execption of the selection box which is Select2.
The bootstrap datepickers are easy to use and configure.
Select2 is an powerful component to use relation data in your admin or application.
Typeahead is a lightweight select replacement
Lightweight jQuery File Upload to upload files.
summernote is a super cool WYSIWYG Text Editor for Bootstrap.
noUiSlider is a range slider without bloat. It offers a ton off features, and it is as small, lightweight and minimal as possible, which is great for mobile use on the many supported devices, including iPhone, iPad, Android devices & Windows (Phone) 8 desktops, tablets and all-in-ones. It works on desktops too, of course!