A Free jQuery Plugin with Hierarchy Select is a lightweight code and easy to use. which converts the Bootstrap 3/4 dropdown component convert into a filterable hierarchical … Bootstrap 3/4 Filterable Hierarchical jQuery Plugin For – Hierarchy Select

Bootstrap-Select is a select dropdown jQuery plugin to modified with default Bootstrap dropdown select with multiple options like: outgroup support, auto-completion, clear selection and search live … Bootstrap 3/4 Select Dropdown With Filter Search In jQuery Plugin – bootstrap-select