Here’s a quick list of those that I’m aware of—in no particular order.
- SelectBoxIt - Github
Requires jQuery 1.6.1+ and jQueryUI Widget Factory 1.8.19+
- Chosen – Github
Requires jQuery 1.4+ or Prototype 1.7+
Neat features like search input for long lists
- jQuery UI Autocomplete (combobox)
Included in jQuery UI
Focussed on searching rather than the dropdown
This post is mostly as a reference, so I don’t need to look up all the options (no pun intended) every time this situation arises. I hope it can help you quickly select (pun definitely intended this time) which one’s best for you.
Update 05 April 2014: Removed “jQuery SelectBox plugin” as both links had died.