Xen Orchestra - A complete web UI for controlling a XenServer or Xen infrastructure.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
SolusVM - Solus Virtual Manager (SolusVM) is a powerful GUI based VPS management system with full OpenVZ...
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.
Virtualizor - Virtualizor is a powerful web based VPS Control Panel.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.