command and conquer

Set the ID3 tags of many types of audio / video files using the command line.

Rip an Audio CD using the command line.

Convert audio files using the command line.

Use command-line tools for working with gravitational waves.

Combine many PDF files into one with bookmarks via GUI or command line.

A versatile file management tool, using XCOPY compatible command syntax.

View, convert, and print graphic files in normal, batch, and command line modes.

Convert multimedia files to different formats from a command line.

Create or update XML files from command line.

My MP4Box GUI is a GUI for the well-known command line tool mp4box.