Using Requisite pro You can store your proj details. You can load all the details you collet from client. SRS Use Cases Prototypes Design....etc.

Requisite Pro is a requirements management tool where you can create views for mapping the testcases to requirements usecases to testcases . These views will help in creating requirement traceability matrices.

Rational RequisitePro is a requirements management tool that helps project teams control the development process. RequisitePro organizes your requirements by linking Microsoft Word to a requirements project and providing traceability and change management throughout the project lifecycle.
Using RequisitePro you can:

Customize the requirements database and manage multiple requirement types.

Prioritize sort and assign requirements.

Control feature creep and ensure software quality.

Track what changes have been made by whom when and why.

Integrate with other tools including Rose ClearCase Rational Unified Process and SoDA.

RequisitePro is a requirement management tool it is one of the IBM Rational
product. This tool is used to preserve maintain the requirements you can map
your requirements with the testcases traceability matrics is used to map Use
Cases with the requirements maintains the version history for the requirements
upload the documents related to the project some packages and templates are
available by default you can create your own templates for the project web
enable the site that the whole team can work at a time to collect (use) the
requirements.

Hope this description is enough once you start using the tool you will
explore more features.

Feel free to revert in case of any issues.