Dropsource - Mobile development platform for building native iOS & Android apps
Ring4 Meeting - Dead simple video conferencing - free, in browser
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!
Fellow.app - A manager’s co-pilot for 1:1s, meetings, feedback & goals 🚀
GoodBarber - GoodBarber is a mobile app creation platform.
openmeet - Account free video conferencing with a rooms component that lets you use VC within a physical meeting room. The server can also be hosted in your own cloud for extra privacy/security.