[castell]

Wrong. The current Etherpad open source project and what you mean are not the same. The first one is the predecessor of Google Wave Java based product, and the current one "Etherpad Lite" is a JavaScript & Node.js based open source project - a reimplementation, possible as Google open sourced the original Java code.

https://en.wikipedia.org/wiki/Etherpad

[kentonv]

Etherpad was not a predecessor to Wave -- Wave was already released when Etherpad was acquired. They did use similar ideas, though.