The best requirements management tools are as follows. 1. IBM Engineering Requirements Management DOORS Next - Best for engineering requirements management. 2. Accompa - Best for ease of implementation and usability. 3. Innoslate - Best for engineering solutions. 4. Polarion REQUIREMENTS - Best for managing requirements for software development projects. 5. Codebeamer - Best for out-of-the-box and API integrations. 6. Atlassian JIRA - Best for teams who practice agile methodologies. 7. Enterprise Architect - Best for strategic modeling, requirements development, and management. 8. Modern Requirements - Best for Azure DevOps for managing & analyzing projects. 9. Jama Software - Best for requirements management for enterprises. 10. Visure - Best for enterprise requirements management with high-level customization.