: A more lightweight, cloud-based alternative that many users find easier to run on laptops with limited storage. Quick Review Summary
Portable inventor to save harddrive space - Autodesk Community Autodesk Inventor Portable Download
: A free, browser-based tool that lets you view and share 2D and 3D designs without installing any software. Autodesk Design Review : A more lightweight, cloud-based alternative that many
: Autodesk officially requires Inventor to be installed on a local physical drive (preferably the C: drive) to function correctly. Attempts to run it as a "plug-and-play" application from external drives are generally unsuccessful. High Hardware Demands Attempts to run it as a "plug-and-play" application
: Even if a portable workaround existed, Inventor is highly demanding. It requires at least 16GB of RAM
: A free, lightweight application for marking up, printing, and tracking changes to 2D and 3D files. Fusion 360
If you need to access Inventor designs on the go without a full workstation installation, consider these official "lightweight" alternatives: Inventor Read-Only Mode