#PDF Annotation Tool
Skim
Skim is a lightweight, open-source PDF reader and annotation tool for macOS, specifically designed for in-depth reading of academic literature. It supports various annotation modes, LaTeX/BibTeX integration, and offers presentation mode along with centralized note management, meeting the efficient reading needs of researchers and students.
GoodNotes
GoodNotes is a powerful intelligent digital notebook that seamlessly integrates handwriting, typing, and real-time collaboration, offering flexible note-taking options. Leveraging AI technology, GoodNotes can transcribe meetings, generate summaries, organize ideas, and create smart flashcards, helping students study more efficiently and enhancing team collaboration and meeting productivity. It is ideal for learning, teaching, planning, and work.