Scratch for Second Life
What is Scratch for Second Life (S4SL)?
S4SL is a new easy way to add behaviors and interactivity to your objects in Second Life. S4SL is based on Scratch, a graphical programming language that lets you construct programs by snapping together graphical blocks. With S4SL, you can snap together a few blocks to make your SL pet interact with you using chat commands, make your sculpture change size and color, or make your house respond to your presence.