Dropsource - Mobile development platform for building native iOS & Android apps
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Siberian CMS - Siberian is an Open-Source and Free App Maker. Unlimited Push Notifications. Unlimited features. Fully Customizable. Download it and build your own app now!
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.
GoodBarber - GoodBarber is a mobile app creation platform.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.