Overtalk A free walkie-talkie for the web
I personally love this. I used to use walkie-talkies a ton growing up. I can see a great application for this, such as group scavenger hunts, in-person events, etc. I'd love to see how this evolves.
Binary Translator Convert binary code to text and vice versa
with this, I may finally understand the Matrix....but really, though, it's a super cool tool to help fools understand the 1's and 0's of code.