Visual Project Management (VPM) is Simplified Critical Chain Project Management (CCPM). VPM brings together the best project management techniques from PERT, CPM, LEAN, Six Sigma, and the Theory of Constraints into one simple tool for managing projects. VPM encourages using aggressive estimates for individual tasks to protect the project rather than the individual tasks. During planning, VPM continuously updates the aggressive duration of the project, calculates the required Project Buffer, and gives the expected completion date (the promised date) should the project be released immediately.
See the iTunes Store for VPM, a free iPhone app version of Visual Project Management.