Description: Okular is a versatile document viewer software for KDE. It supports viewing PDFs, EPUBs, ODT, and other document formats. Okular allows annotating, highlighting, commenting on documents as well as filling forms.
Type: software
Pricing: Free
Description: ShuBook is a free and open source note taking and knowledge management web application. It allows users to create personal wikis to organize notes, documents, web pages, and more with tagging and links between pages.
Type: software
Pricing: Open Source