jQuery Gantt Chart is a plugin that creates an interactive Gantt chart from a json data source.
The chart is used to illustrate a project schedule. The plugin has options to customise the date ranges and these can be zoomed in/out to display in more/less detail.
It has events to view item details by clicking on a filled space and to add a new item by clicking in an empty space.
The state of the chart can optionally be persisted using cookies.