Open Workbench is a free project management software. It's suppose to replace MS Project. Does anyone use it? How well does it replace MS Project? I used Open Office but had to go back to MS Office because of its usability. I also used Thunderbird but had to go back to Outlook because my PDA didn't sync with Thunderbird and the usability and features of Outlook were better. Should I just invest in MS Project instead and skip the free Open Workbench?