Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Visualify - Visualize your top artists on Spotify
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
Spotify Web Visualizer - Beautiful full screen visuals for Spotify web player
Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.
Graphic Foundry - High-impact audio reactive music visualizers 💎