If you are a power user needing EVA (Earned Value Analysis) or multiple undo levels, you must use Microsoft Project—portable or not. If you just need basic Gantt charts, switch to ProjectLibre Portable . It runs perfectly from a USB stick, requires no registry changes, and opens ancient MPP files (pre-2013).
: Because it isn't installed natively, you may experience frequent crashes when handling large .mpp files. microsoft project portable