Teamwork Gantt is a free jQuery component, created by Teamwork (a project management service), that simplifies generating Gantt charts. Gantt charts are an important piece of project management apps or any process with a duration.
It has a wide array of features including zooming, drag ‘n’ drops, in-place-editing, resize, scroll and many more.
There is support for exporting the data in JSON and the layout is skinnable with CSS.
Requirements: jQuery
Website: http://gantt.twproject.com/
Demo: http://gantt.twproject.com/distrib/gantt.html
Download: https://github.com/robicch/jQueryGantt