Selectize
                                    Selectize is the hybrid of a textbox and <select> box. It's
                                    jQuery-based and it's useful for tagging, contact lists, country selectors, and so
                                    on.
                                
Switchery
iOS 7 style switches for your checkboxes
                                            Add an attribute 
                                                    data-plugin="switchery" data-color="@colors"
                                            to your input element and it will be converted into switch.
                                        
                                            Add an attribute 
                                                    data-size="small",data-size="large"
                                            to your input element and it will be converted into switch.
                                            Add an attribute 
                                                    data-color="@color" data-secondary-color="@color"
                                            to your input element and it will be converted into switch.
                                        
Select2
The jQuery replacement for select boxes
Single Select
Select2 can take a regular select box like this...
Multiple Select
Select2 can take a regular select box like this...
Bootstrap MaxLength
Uses the HTML5 attribute "maxlength" to work.
The badge will show up by default when the remaining chars are 10 or less:
                                                Do you want the badge to show up when there are 20 chars or less? Use
                                                the threshold option:
                                            
                                                Please note: if the alwaysShow option is enabled, the
                                                threshold option is ignored.
                                            
                                                All you need to do is specify the placement option, with
                                                one of those strings. If none
                                                is specified, the positioning will be defauted to 'bottom'.
                                            
Bootstrap maxlength supports textarea as well as inputs. Even on old IE.
Multiple Select
Example of multiple select.
Default
                                            Use a 
                                                        <select multiple />
                                            as your input element for a tags input, to gain true multivalue support.
                                        
Grouped Options
                                            Use a 
                                                        <select multiple />
                                            as your input element for a tags input, to gain true multivalue support.
                                        
Auto Complete
Ajax Autocomplete for jQuery allows you to easily create autocomplete/autosuggest boxes for text input fields
Bootstrap Touchspin
                                    A mobile and touch friendly input spinner component for Bootstrap.
                                    Specify attribute data-toggle="touchspin" and your input would be
                                    conveterted into touch friendly spinner.