Comments by Highlight - Collaboration on Highlight makes debugging faster than ever
Customer.io - We make it easy to send emails triggered by user behavior. Build, measure and improve your emails to activate and retain users
Eccco - Record a listen short audios, like Twitter but with voice.
HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
Email Comments - Add Google Docs like comments to Gmail
Vero - Email platform for product, marketing and engineering teams