Annotable - Ultimate image annotation & markup tool
Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
marker.js Live - marker.js Live is a companion library for marker.js 2 enabling dynamic representation of image annotations.
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
Drift - A messaging app that helps you grow your business.
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.