Description: PDFsam is an open-source PDF editing software that allows users to merge, split, rotate, mix and extract pages from PDF files. It has a graphical user interface and offers basic PDF manipulation functionalities for free.
Type: software
Pricing: Open Source
Description: Scopus is a large abstract and citation database of peer-reviewed literature. It covers scientific journals, books, and conference proceedings in the fields of science, technology, medicine, social sciences, arts, and humanities.
Type: software