Project is a complex database-driven tool. Portable versions often crash when handling large Gantt charts or complex resource leveling because they lack the necessary system drivers.
This feature allows users to save their entire project workspace—including the executable, the project file, linked documents, and specific user views—into a single, self-contained folder. This "Project-on-the-Go" package can be transferred to a USB drive or shared via cloud storage, allowing the project to be opened and edited on any Windows computer without requiring a formal installation of Microsoft Project 2013 or Administrator rights. ms project 2013 portable
Are you comparing this to a or alternative software ? MS Project 2013 and Office 365 - Spiceworks Community Project is a complex database-driven tool