KL-Module - Links
  Hybrid Modules for analog Modular Synthesizers
Enhance your musical possibilities
Other sites of interest
  Manufacturers of modular and semimodular synthesizers
Club Of The Knobs "Moog Clones" and more
"The Return Of The Mammouth"
Synthesizers.com Not a "Moog Clone" but the same philosophy
Doepfer (One) father of " Eurorack"
Anyware-Instruments Home of the semimodular
Moog Archiv Selfexplanatory

Other forums, and not only for modular synthesizers and sequencers:
Sequencer.de The "Mother" of german synthesizer forums
Dotcomformat A forum not only for "Dotcom-User"