omniget

Open-source desktop app for downloading, organizing and studying media. Native cross-platform (Tauri + Rust + Svelte). PDF/EPUB reader with focus mode, timestamped notes and spaced repetition. Media downloads via yt-dlp (1.800+ sites). Extensible plugin system. Maintained by tonhowtf on GitHub, where it has earned 6,732 stars from the community.

It's actively developed around bilibili-downloader, course-downloader, desktop-app, and is a solid reference for anyone building with these tools.