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The most well known manufacturer... Many Kinds of DMX products (control and distribution) and recently LED Strip with black PCB.
DMX products. Very good products, strong and reliable.
Full range of DMX products (usb, ethernet, LedDrivers, etc...) Very good products, strong and reliable.
A low cost, credit-card sized computer
A low-cost, community-supported development platform
Software
Server X Window for OSX
A framework for lighting controll information
TouchOSC website