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User Requirements Notation (URN)
URN is intended for the elicitation, analysis, specification, and validation of requirements. URN combines two complementary views: one for goals provided by the_Goal-oriented Requirement Language (GRL)_ and one for scenarios provided by the Use Case Map (UCM) notation.
UniqueSoft Tool Suite / Test Architect is a commercial tool that allows to transform initial requirements written in natural language to formal specifications modeled with UCM, and then to creates test scenarios in the form of Message Sequence Charts (MSC) in a way that guarantees functional coverage of the tested application.
ArchSync is UCM tool that helps architects to reconcile a scenario-based architectural description with its source code, as changes are being made on the code.
UCM Navigator (UCMNav) is a multi-platform UCM tool developed between 1997 and 2005. It is still available but has been phased out in favor of jUCMNav.