Yain Vieyra

Pro Align Tools is a Blender add-on for aligning many objects at once interactively in the 3D viewport. It works in Object Mode, offering auto-alignment plus control over projection plane, origin point and orientation.

Shift Render Slot is a Blender addon that automatically shifts render slots while you render images, so test renders and multiple shots don't overwrite each other. It works from the UV/Image Editor.