Joplin

Joplin is an open-source note-taking application designed to capture, organize, and share multimedia notes across devices. It supports images, videos, PDFs, and audio files, and includes functionalities like math expressions and diagrams. Users can synchronize their notes across multiple platforms such as Windows, macOS, Linux, Android, and iOS using services like Dropbox and OneDrive. A key feature is its end-to-end encryption, ensuring data privacy and security.