Evolutionary Systems Development is a class of methodologies that attempt to
formally implement Evolutionary Prototyping. One particular type, called
Systemscraft is described by John Crinnion in his book: Evolutionary Systems
Development.
Systemscraft was designed as a 'prototype' methodology that should be
modified and adapted to fit the specific environment in which it was
implemented.
Systemscraft was not designed as a rigid 'cookbook' approach to the
development process. It is now generally recognised[sic] that a good
methodology should be flexible enough to be adjustable to suit all kinds of
environment and situation.
The basis of Systemscraft, not unlike Evolutionary Prototyping, is to create
a working system from the initial requirements and build upon it in a series of
revisions. Systemscraft places heavy emphasis on traditional analysis being used
throughout the development of the system.