Instagram Automatic Posting by Iconosquare - Schedule now. We'll post on Instagram for you later!
Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
Later - Schedule and manage your Instagram posts
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
Storyheap - Manage your SnapChat and Instagram stories.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.