👾 A crowd-sourced map of 4000+ Space Invader street art mosaics in 80+ cities around the world

🗓️ Visualize life events week-by-week

🎭 Unofficial tools to better navigate one of the biggest festivals of performing arts in the world

🏆 A "battle of heuristics" coding competition with problems inspired by engineering at Google

🔬 A book about teaching computers to find broken capsules on the factory line, based on 3 years of real life examples

Community website in Polish centered around Jacek Kaczmarski ballads