Ideally one would require Microsoft Project software installed on the computer in order to open and view Microsoft Project (.mpp) files. We have already seen alternative free MOOS Project viewer software to open Microsoft Project files without the need of original Microsoft Project
Open Microsoft Project files without MS Project installed on PC
Do you want to open Microsoft Project files without MS Project software installed on the computer? MOOS Project is a free viewer software to open and view any Microsoft Project files. You do not need to buy and install premium MS Project software if you only want to view Microsoft project