Minitube
Minitube – a simple software for viewing videos from YouTube: just enter the search keyword and Minitube will output an endless video stream
Gnome Twitch
Gnome Twitch – free and open source software allows searching for and watching Twitch streams from the desktop for Linux
Stremio
Stremio – organize and watch videos, movies, TV series and TV channels from different services: Youtube, iTunes, Amazon, Netflix, Twitch and others
VLC
VLC – free and open source cross-platform powerful multimedia player which plays most multimedia formats
Elisa
Elisa is a simple and beautiful music player with online radio support. Free and open source program
Clementine
Clementine – multiplatform free and open source modern music player and library organizer
Akregator
Akregator – free and open source is a news feed reader, that supports RSS and Atom feed formats with a built-in web browser
Liferea
Liferea – news aggregator that supports RSS and Atom feed formats with a embedded web browser for Linux. Free and open source program
Persepolis Download Manager
Persepolis – a simple cross-platform free and open source download manager with a built-in video downloader
uGet
uGet – cross-platform free and open source light but powerful download manager