Serena Dimensions RM - Serena Dimensions RM is a web application to improve the definition and management of requirements across the product lifecycle.

Jama - Jama combines requirement management software with enterprise collaboration capabilities to solve product delivery problems.

ReqView - Simple and powerful requirements management tool enabling easy requirements gathering, traceability tracking and offline collaboration.

Reqtify - Reqtify is an easy to use, interactive application for managing requirements.  

Visure - Visure offers  a flexible , modern and complete requirements ALM Platform (Application Lifecycle Management).

Jama Connect - The Leader in Requirements Management Solutions