Polar
Polar is a powerful desktop app for managing all your web content, books, and notes. Polar keeps all your content in one place, supports tagging, annotation, highlighting and keeps track of your reading progress. POLAR allows you to keep all your documents, annotations, and flashcards in once place. Never lose track of what you're reading again. Annotate documents directly while reading them and sync with spaced repetition systems like Anki so you never forget an important fact ever again.
