Protocol Buffers

Think about XML, but simpler and faster. With Protocol Buffers, you can set the structure of your data, serialize and pass from and to different data streams. The code uses class-like structure stored in a .proto file.
You might want to check it out. Protocol Buffers



An emerging twitter competitor Identi.ca

This one’s cool to, it’s basically open source and you can check out the code. That if you want to have a microblogging system in your nerves. check indenti.ca.