AfricanStockPhoto

The best open-source JS uploader library, works amazing on desktop and mobile. Dropzone.js

All the power of the JVM, with the ease-of-use of a modern web framework. Grails

Infinate scalability - we use this to fire up our 'auto tagging bots' AWS Lambda

The brains behind our auto-tagging - we can automatically detect contents of images using this Amazon Rekognition