LeoCAD - LeoCAD is a CAD program for creating virtual LEGO models.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
LDraw - LDraw is an open standard for LEGO CAD programs that allow the user to create virtual LEGO models...
Invision - Prototyping and collaboration for design teams
LDCad - LDCad is a multiplatform ...
Sketch - Professional digital design for Mac.