Wildcard - Discover, connect and meet people at communities
SimPhy - Interactive 2D & 3D Physics simulation software
GetReal - Meet new people, in person
Khan Academy - Khan Academy offers online tools to help students learn about a variety of important school subjects. Tools include videos, practice exercises, and materials for instructors. Read more about Khan Academy.
Event Hunt - Startups and Tech Events Curated By Locals
Physical Web - Walk up and use anything