CS-Cart Multi-Vendor - On-premises eCommerce marketplace builder
Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
Clickfunnels - Optimize sales page with a simple drag-n-drop interface
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
VipeCloud - Forecast Automation. Sales, Pipeline, and Campaigns all in one product - a CRM replacement.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.