Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
BioDigital Human - Google Earth for the human body
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
3D anatomy by teamLabBody - 3D human anatomy app based on actual human bodies
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
Pandai - The learning app for school students in Southeast Asia