Crystal Clear is a member of the Crystal family of methodologies as described by Alistair Cockburn and is considered an example of an agile or lightweight methodology.
Crystal Clear can be applied to teams of up to 6 or 8 co-located developers working on systems that are not life-critical. The Crystal family of methodologies focus on efficiency and habitability as components of project safety. Crystal Clear focuses on people, not processes or artifacts.
Crystal Clear requires the following properties:
Crystal Clear additionally includes these optional properties:
References
Crystal Clear (software development) Wikipedia(Text) CC BY-SA