Sandro Pasquali began writing games on a Commodore PET in grade school, and hasn't looked back. A polyglot programmer, who started with BASIC and assembly, his journey through C, Perl, and PHP led to JavaScript and the browser in 1995. He was immediately hooked on a vision of browsers as the software delivery mechanism of the future. By 1997 he had formed Simple.com, a technology company selling the world's fi rst JavaScript-based application development framework, patenting several technologies and techniques that have proven prescient. Node represents for him only the natural next step in an inevitable march towards the day when all software implementations, and software users, are joined within a collaborative information network. He has led the design of enterprise-grade applications for some of the largest companies in the world, including Nintendo, Major League Baseball, Bang and Olufsen, LimeWire, and others. He has displayed interactive media exhibits during the Venice Biennial, won design awards, built knowledge management tools for research institutes and schools, and has started and run several startups. Always seeking new ways to blend design excellence and technical innovation, he has made signifi cant contributions across all levels of software architecture, from data management and storage tools to innovative user interfaces and frameworks. He now works to mentor a new generation of developers also bitten by the collaborative software bug, especially the rabid ones.