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!
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
GoodBarber - GoodBarber is a mobile app creation platform.
Microsoft Teams - Microsoft Teams provides the enterprise-level security, compliance and management features you expect from Office 365, including broad support for compliance standards, and eDiscovery and legal hold for channels, chats, and files.
Bizness Apps - Create your own app or become a reseller and build apps for others
RingCentral Video - Live life unlimited. Free video meetings and team messaging in one app that works the way you do.