Weava - Workspace to highlight, organize & collaborate on your research articles.

Customer.io - We make it easy to send emails triggered by user behavior. Build, measure and improve your emails to activate and retain users

Good Annotations - A online annotation tool that is perfect for providing feedback to your team.

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.

Genius Annotations - Embed text annotations on your site. Annotate the web.

If No Reply - Simple email automation that works for Gmail