Collecting project requirements

I always encounter the problem of collecting requirements before starting a new project. I do this in different programs depending on the complexity of the project, when in Word, when in Mindjet MindManager. I tried to find special software or information, including on the habr — I did not find it, although I look at the topic “Requirements Collection” here often. So, I think this issue will be relevant to Habré.



At the moment I know of several professional products created for structuring, collecting and analyzing requirements:



- Rational RequisitePro

- AllFusion Process Modeler (previously: BPwin)

- AllFusion ERwin Data Modeler (previously: ERwin)

- Doors

- Borland Caliber RM

')

How do you collect / structure / analyze project requirements?