zeroqode - Build your app up to 10x faster with no-code app templates
UX Flow Wireframe Prototyping System - Create beautiful user flows prototypes for your next project
Codeplace - Learn how to code by building real web apps
draw.io - Online diagramming application
Code4Startup - Learn Ruby on Rails, Python, AngularJS, NodeJS, React, Ionic by cloning AirBnb , TaskRabbit, Tinder, Product Hunt, Fiverr and . more.
UMLGraph - UMLGraph is a professional automated drawing tool that allows the designers the declarative specification and drawing of UML class and sequence diagram.