MuseScore
Music notation program that offers a free alternative to professional programs such as Sibelius and Finale
Multimedia player for various audio and video formats as well as DVDs, VCDs, Quicktime, Real and various streaming protocols. VLC now has Chromecast support!
Audacity is a free, easy-to-use, multi-track audio editor and recorder that stands as a premier audio editing and recording software that offers a wide array of features accessible to both novices and professionals.
Spytify records Spotify to mp3 without ads while it plays and includes media tags to the recorded file.
Caustic 3 is a music creation tool inspired by rack-mount synthesizers / samplers rigs.
Any Audio Converter can extract audio from all popular video formats and online videos, and convert unprotected audio files to a wide range of formats.
Televzr is a free media organizer, downloader and handy player for all Window versions that downloads videos from almost 700 video-hosting platforms to your computer.
Free YouTube Downloader downloads online videos onto your hard drive if you want to view a video offline or convert it into a format that can be stored on a mobile device.