Stick to the official sites for VueScan or NAPS2 to avoid malware.
Some Windows 7 users consider running a Windows XP virtual machine (VM) to use ancient scanner drivers. Do not do this. USB passthrough on VirtualBox/VMware for scanners is notoriously unstable on Windows 7. Universal software is far more reliable. universal scanner software for windows 7
Most major manufacturers (HP, Epson, Canon) stopped releasing new drivers for Windows 7 around 2018–2020. If you buy a used high-end scanner from eBay or dig an old workhorse out of storage, the manufacturer’s website will likely show "No drivers available." Stick to the official sites for VueScan or