K2PDFOPT is described as 'K2pdfopt (Kindle 2 PDF Optimizer) is a stand-alone program which optimizes the format of PDF (or DJVU) files for viewing on small (e.g. 6-inch) mobile reader and smartphone screens such as the Kindle's' and is an app in the Office & Productivity category. There are 2 alternatives to K2PDFOPT for a variety of platforms, including Android, Android Tablet, iPad, iPhone and Linux. The best alternative is ScanTailor Advanced, which is both free and Open Source.
Scan Tailor is an interactive post-processing tool for scanned pages. It performs operations such as page splitting, deskewing, adding/removing borders, and others. You give it raw scans, and you get pages ready to be printed or assembled into a PDF or DJVU file.
eBook platform focused on openness that provides e-book library management and reader for users to upload & read their e-books across all devices while also allowing businesses and schools to create their own digital library to distribute content.