Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Serena Dimensions RM - Serena Dimensions RM is a web application to improve the definition and management of requirements across the product lifecycle.
Invision - Prototyping and collaboration for design teams
ReqView - Simple and powerful requirements management tool enabling easy requirements gathering, traceability tracking and offline collaboration.
Sketch - Professional digital design for Mac.
Visure - Visure offers a flexible , modern and complete requirements ALM Platform (Application Lifecycle Management).