Every day, interesting machine learning projects get posted to GitHub, but they soon disappear into the abyss if you're not quick to bookmark them. I've created a small collection of ML projects that stood out to me from HN, reddit, and GitHub. Preference was given to open source projects witht an online demo. Let me know if I missed any!
Fritz makes it easy to build these experiences with an end-to-end mobile ML platform. Get started at https://fritz.ai
Nexosis provides a public API which allows developers to quickly add machine learning to applications.