Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
AddThis - AddThis free website tools include share buttons, targeting tools and content recommendations help you get more likes, shares and followers and keep them coming back.
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
ShareThis - Grow your audience with easy-to-use sharing tools.
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
AddToAny - Share buttons by AddToAny, the universal sharing platform for websites and apps.