Description: Anki is a free, open-source flashcard program that uses spaced repetition to help users memorize information more efficiently. It allows users to create digital flashcards with text, images, audio, videos, and LaTeX support. Anki's algorithm schedules flashcards to show up at increasing intervals based on the user's performance to reinforce long-term memory.
Type: software
Pricing: Open Source
Description: PDF Annotator is a PDF viewer and editor that allows users to add annotations like text comments, highlights, shapes, and drawings to PDF files. It has basic PDF editing features to rearrange or delete pages.
Type: software