TubeMerger

TubeMerger is a local-first, privacy-preserving open-source desktop application for Windows, macOS, and Linux. It allows users to download YouTube playlists, selectively skip clips, merge full playlists into seamless videos with chapter markers, extract or stitch MP3 audio albums, and choose video qualities up to 4K Ultra HD. The app features a granular playlist inspector, process-level pause/resume, sequential queue management, and intelligent streaming diagnostics, all running offline with no ads, no cloud dependency, and no user account needed.