Pixorize - Browser-based image annotation and sharing
Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
Picmonic - Picmonic transforms forgettable facts into memorable stories and characters
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
Complete Anatomy - Groundbreaking platform for anatomy education and reference.
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.