Hypothes-is
Slack
Flip (formerly called Flipgrid)
Nearpod
VoiceThread
Edpuzzle
Kahoot
SoftChalk
Camtasia 2019
ScreenPal (formerly Screencast-O-Matic)
Padlet
Piktochart
Pinup
Prezi
MindMeister
Weebly
WordPress