https://blendermarket.com/products/autoconstraints

intuitive.It reduces the guesswork of working in the 3D viewport by automatically applying axis-constraints to a variety of 3D tools.

• No need to manually apply constraints to every operation
• No switching in and out of orthographic views
• No clicking small parts of gizmos

Transform with the speed of Blender’s gestural hotkeys and the accuracy of gizmos!