Pdf+ - Pdf+ is a reader for PDF documents, which are also known as Adobe Acrobat files.
NAPS2 - NAPS2 is a document scanning application with a focus on simplicity and ease of use.
FoxyUtils Online PDF Tools - All the PDF tools you need! Save time with our easy to use online tools to merge, split, convert, and edit PDF files.
Simple Scan - Project information. Part of: The Gnome Project. Maintainer: Simple Scan Development Team. Driver: Simple Scan Development Team. Licence: GNU GPL v3.
PDF Reader Pro - PDF Reader Pro is an all-in-one PDF office supporting to Read, Annotate, Edit, OCR, Convert, Create & Fill Form, Sign PDFs, TTS on Mac, iOS, Android, and Windows.
XSane - A good proposal for SANE-2 has been written.