: A completely legal resource that indexes high-quality, peer-reviewed, open-access journals across all areas of science and technology.
: These platforms collectively offer over 10 million books and 85 million articles.
For discovering these papers, the following search engines are highly effective: Google Scholar Semantic Scholar CORE Baidu Scholar The best academic search engines [Update 2025] - Paperpile
: Many researchers upload their full-text papers here; you can often download them directly or request the full text from the authors. Helpful Browser Extensions & Tools