NAPS2 is free and open source scanning software for Windows, Mac and Linux.

Easily scan with devices from Canon, Brother, HP, Epson, Fujitsu, and more. Then save to PDF, TIFF, JPEG, or PNG with a single click.

Changes in 7.5.2:

• NAPS2 is now available on the Microsoft Store & the Mac App Store
  • It costs a small fee to support the developer and provide automatic updates
  • NAPS2 will continue to be freely available at www.naps2.com
• Windows: Installers and executables are now EV code-signed
• Fixed NAPS2.Console issues with cancellation
• Fixed ESCL compatibility with AirSane
• Fixed an issue with Apple Driver and out-of-order pages
• Fixed auto save file prompts to cancel correctly

Download: NAPS2 (64-bit) | NAPS2 (32-bit) 
Download: Portable NAPS2 7.5.2 
Link: NAPS2 Home Page