Flinto - The prototyping tool designers have been waiting for.
zeroqode - Build your app up to 10x faster with no-code app templates
Base UI Sketch Framework - Huge set of everything you need to design and prototype
Glyphy - Copy & paste fancy fonts + cool symbols ☞✺✐™
Kodika.io - Build powerful iOS apps on your iPad with no code.
Enzyme - Enzyme is a JavaScript testing utility for React.