FWIW, I started notes on the various ratcheting wrench OEM's about 6 years ago...last updated probably a 3/4 years ago. So, it was current at that time:
DANAHER EMPIRE:
The GearWrench name is a registered trademark owned by EASCO (Danaher took over EASCO in 1989); Danaher *enforces* the trademark and name:
-Lea Way (REVERSIBLE rat wrench):
GearWrench/Craftsman/Mastercraft/Kobalt/Matco, Hazet, Beta(?)
Snap-on and Blue-point rat. wrench (not sure what type)
-Sata China (non-reversible: single direction; flex; etc.)
GearWrench/Craftsman/Mastercraft/Kobalt/Matco, Hazet?
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STANLEY EMPIRE:
-Hi-Five (rat. wrench):
Stanley brand, Husky, Blackhawk, Proto, Facom, SK
*Hi-Five supplying King Tony or Teng?
Chiro (rat wrench):
Stanley
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Kabo:
Matco (Danaher; Matco became a division of Danaher in 1996?)
Mac Edge (Stanley: Stanley bought Mac in 1980)
SK (rat wrench)
Blue-point
Crescent
Napa
KTC
TONE
Pedros
Berner (some)
Ega Master
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Cendai:
Blue-point and Snap-on (per Reversegear)
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Infar (Gear Tech Brand):
Harbor Freight, Kastar, TOP, DEEN (incl. regular wrenches)
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Ru-Shine (rat wrench):
Rotar
Ru-Shine/Quan Tian (ratchets/torque wrenches):
Deen
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Chang Loon:
Princess Auto, Gray, Unior
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Ye Ten Tool Co.:
http://www.benchmark-tool.com/yeten/
SEK for ratcheting flarenut wrench
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Williams Tools supplies Stanley, and parts for Snap-on/CDI (digital TQ wrench)