Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
phpList - phpList is an email and newsletter marketing tool.
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
PilotMail - Build awesome HTML emails and test them easily on real email clients before sending with PilotMail.