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: ResearchGate is a social networking site for scientists and researchers to share papers, ask and answer questions, and find collaborators. With over 19 million members, it allows researchers to connect with others in their field and discover research from around the world.
Type: software