Open-source Online Tool for Retrospectives
"Scrumlr is a webapp for collaborative online retrospectives.
Take a seat and let us guide you and your team through your first online retrospective. Start your first session within seconds - completely for free, no registration or payment details required. Put your thoughts and your feedback on cards and share them instantly on a collaborative virtual board. Vote on the topics that really matter.
Scrumlr is open-source built with React & Redux."