Atlassian just acquired GreenHopper, a popular JIRA plugin with over 800 customers.
GreenHopper is a JIRA plug-in that adds a broad collection of agile project management capabilities to JIRA, and extends JIRA as a powerful platform for agile development teams. GreenHopper simplifies the planning and organization of tasks, workflows and reporting for agile teams.
It introduce in JIRA
Card management:&160; Visualise issues, tasks and user stories as graphical "cards", color-coded and dynamically editable.
Planning Board: Quickly create, assemble, sort and prioritize project tasks with drag-and-drop simplicity.
Task Board: Track progress through simple, graphical views of remaining tasks across projects and teams.
Chart Board: Customizable dashboard, dynamic burn down and burn up charts.
Learn all about GreenHopper at www.atlassian.com/greenhopper. Unfortunately it is not a free extension… ($700 to $1150 to add to JIRA)