Description: Adobe Acrobat Reader is a free software application for viewing, printing, signing, and annotating PDF documents. It is the standard PDF viewer and one of the most popular free software downloads with over 2 billion installations.
Type: software
Pricing: Free
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