Flow – Lean Project Management Based on Kanban
http://flow.io/

Flow is a lean project management application based on kanban. Key Benefits include: a) Visualize your workflow – See what is going on at a glance: How many tasks there are in each phase, and who is working on what; b) Estimates are optional – flow’s automatic time tracking measures your progress, which is a reliable indicator of your future performance; and c) Just-in-time production – Working on everything simultaneously slows you down with too many tasks in various states of completion. Finish more in less time by using Work In Progress (WIP) limits. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog.