As the situation with COVID-19 unfolds, ORPALIS is offering a free subscription of PaperScan Pro Scanning Software valid until April 2021, for everyone.
PaperScan Scanner Software is a powerful TWAIN & WIA scanning application centered on one idea: making document acquisition an unparalleled easy task for anyone.
Use PaperScan to import any image/PDF files, arrange them in any imaginable single-page/multi-page configuration, perform a wide range of image adjustments and enhancements, annotate them with sticky notes, rubber stamps, highlighter or arrows and save your work in various file formats including JPEG, TIFF, PDF and JBIG2. PaperScan is simply universal while most of the scanning applications are dedicated to one scanner or one protocol.
Update: This offer has ended, but you may like NAPS2 Scanning Software.