jQuery.textcomplete is a jQuery plugin that introduces autocompleting power to textareas, like a GitHub comment form has.
Expanding Textareas is a jQuery plugin for elegant expanding textareas. The plugin creates a textarea clone with identical dimensions to that of the original.
A jQuery plugin for textarea in fullscreen mode.
AutoJS is a library to continuously autocomplete textarea based on a standard dictionary. Dictionary has been deviced based on researches and linguistic methods, keeping an eye on minimizing the size of the library. Complete project is written in plain js, with no external dependencies, and it's size is reduced to mere 6kb.
Fancyform is a jQuery plugin that offers a nice and elegant way to transform your HTML elements into custom styled elements. It's easy to implement and customize.
The elements you can style are input:radio,input:checkbox, select and textarea
Fancy Fields is a jQuery plugin to customize form elements easily. Text boxes, text areas, radio buttons, checkboxes, select items etc.
Autosize is small jQuery plugin to allow dynamic resizing of textarea height, so that it grows as based on visitor input. To use, just call the
.autosize() method on any textarea element.
markItUp! is a very lightweight, customizable and flexible engine made to meet the developer's needs in their CMSes, blogs, forums or websites.