Description: Google Scholar is a free online academic database that indexes scholarly literature across disciplines and sources. It allows users to search for peer-reviewed papers, theses, books, abstracts, and court opinions.
Type: software
Description: Tree Notes is a free personal information manager for Windows that allows you to organize notes, ideas, and data in a tree structure. It has features like tagging, searching, cloud sync, encryption, and more.
Type: software
Pricing: Open Source