After a beta period lasting a decade, application launcher and task manager Quicksilver for OS X 1.0 (free) has finally been released. The application, which was in the hands of its original developer for six years before finally falling to a collective group of volunteer developers to finish starting in 2009, uses mouse gestures or keyboard shortcuts to do searches, launch programs, associate file types with particular applications and other features, according to a post on the group's blog.