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. It’s also easily stylable, and it supports optgroups, single/double quotes, and any data you throw at it.
I became one of the primary maintainers of Selectize in 2020, and have been working to improve the project and its documentation.
Find out more at https://selectize.dev