This could prove useful for CofP people about to engage in gathering user requirements:

Open Source Requirements Management Tool

Introduction

Requirements Analysis is the process of wading through documentation, process flows, system inputs and outputs, eliciting requirements from users and much more. The output from that process are the requirements typically undertaken by business analysts and senior developers.

Functional requirements, non functional requirements, business requirements, regulatory requirements, user requirements - the list goes on for large and complex systems. An enormous challenge lies in mapping these requirements to feature lists for marketing, design and implementation for developers, test cases for quality control, use cases and user documentation. …

OSRMT, an acronym for Open Source Requirements Management Tool, has been designed from the ground up to meet these needs. OSRMT has forms for each ‘artifact’ - features, requirements, design items, source code and test cases. Each group of artifacts can be arranged in a tree hierarchy, sorted, searched, filtered and reported upon. Artifacts themselves also have subcomponents. Within a form you can fill out a small table/list of items which are details to the artifacts such as data dictionary elements, use case actions, test case steps etc