"SBook5 is now an abandoned project. The complete source code, including the AI engine, is now being made available to the community."

I really hope someone picks this up. SBook5 is a unique alternative for those who feel constrained by Apple's Address Book. It has served me excellently for years, but is in need of maintenance: basically very solid, but some of the peripheral functions don't work quite as they should. It deserves a future, because nothing else out there does the same thing quite so well.