AMPLI.FI - Live online music community. Twitch for tunes.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Bandlab - Capture, nurture, and collaborate on song ideas in the cloud
Invision - Prototyping and collaboration for design teams
Blattarco - Creative self-developement for musicians of all level.
Sketch - Professional digital design for Mac.