GearWrench has really big backing in that they are owned by Apex Tool group. Apex is a huge conglomerate tool manufacturer who makes just about every tool you can imagine. My company is a distributor but we honestly don't do too much with them.
Those same guys own:
Allen – Hex keys
Armstrong Tools – Industrial hand tools, made in the USA.
Atkins – Hacksaws
Belzer – hand tools
Campbell – Rigging, chains, and clamps.
Caulkmaster – Pneumatic dispensing guns
Collins – Machetes, shovels, and axes
Crescent – Produces general hand tools and tool sets.
Delta – tool boxes
Diamond – Horseshoes and farrier tools.
Erem – Precision pliers.
H.K. Porter – Bolt and cable cutters.
Iseli – Precision matched parts
Jacob's Chuck – drill chucks
JOBOX – truck boxes and site storage
K-D Tools – mechanic's hand and specialty tools
K&F – files and rasps
Kahnetics – Dispensing systems.
Lufkin – Manufactures measuring tools such as calipers, gauges, micrometers, and measuring tapes.
Mayle – Mechanic's hand tools
Nicholson – Produces files, rasps, and saws.
Plumb – Striking tools, such as hammers, axes, and chisels.
SATA – Mechanic's hand tools.
Spline Gauges – gauges
Weller – Soldering stuff
Wire-wrap – Electrical connection equipment.
Wiss – Scissors and snips.
Xcelite – Electronics tools such as general and specialized screwdrivers and
Airetool – tube cleaners and expanders
Apex – production impact sockets, bits, and universal joints
Buckeye – material embossing
Cleco – assembly tools
Cooper Automation – automated fastening systems
DGD – automated systems
Doler – advanced drilling equipment
Dotco – material removal tools
Master Power – industrial air tools
Metronix – Servos, drivers, and speed controls
Quackenbush – advanced drilling equipment
Recoules – drilling tools
Rotor – assembly equipment
Utica – torque measurement and control tools