InfoPath - Microsoft InfoPath is a software to create data forms based on XML.
Bizness Apps - Create your own app or become a reseller and build apps for others
Typeform - Create beautiful, next-generation online forms with Typeform, the form & survey builder that makes asking questions easy & human on any device. Try it FREE!
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!
Nintex - Cloud-based digital workflow management automation platform
Dropsource - Mobile development platform for building native iOS & Android apps