Metronome (Helps keep a steady tempo) - https://www.google.com/search?q=metronome

Test Your Instrument Skills (Reading music and finger placement) -  https://www.musicracer.com/ 

FlipGrid (Submit playing tests and practice sessions you want feedback on) -https://info.flipgrid.com/

Essential Elements Interactive (6th graders: Use the Student Code at the front of your band book!-https://www.essentialelementsinteractive.com/