You do not need administrative rights on a computer to run it.
While there is no official "ProjectLibre Portable" release from the developers, simply extracting the installation files to a folder on a USB drive effectively creates a portable version that you can use on any Windows computer with Java installed. projectlibre portable
For exceptionally large projects with thousands of tasks, run the portable folder from a fast USB 3.0/3.1 flash drive or an external SSD rather than an old USB 2.0 drive to ensure rapid file loading and rendering. Final Verdict You do not need administrative rights on a
Now you are officially a mobile project management professional. Happy scheduling. projectlibre portable