BB Tools is an add-on for Blender that creates a custom menu in the 3D View Editor Menus (in Edit Mode). This custom menu gives you access to many custom-made tools that improve and speed up modeling in Blender.

There is a full video review on this Add-on here: YOUTUBE VIDEO SHOWCASE

An extensive 64 pages User guide of all tools is available here: BB TOOLS USER MANUAL

There are, as of this moment, 31 tools, that are a huge lifesaver for anyone modeling in Blender

Here is a full list of the tools available:

Array Linear
Array Radial
Bend
Mirror
Screw
Solidify
Stretch Deform
Taper
Twist
Wireframe

Bridge
Curve deform
Extrude Edges with Loopcuts
Extrude Faces with Loopcuts
Extruder along Path
Upright Extruder
Inset
Offset
Fill Curve
Polyline Extender
Shear

Bezier From Points
Circle++
Ellipse++
Grid 3D
Grid Hexagon
Grid Triangle
Quad
Quad Sphere
Shape From 2 Polylines
Tubes