Dropsource - Mobile development platform for building native iOS & Android apps
Public - Group chats.
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!
SoChat - Chat with everyone
GoodBarber - GoodBarber is a mobile app creation platform.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.