- 't natte gerst
- Alles over hop (USA)
- Bay area mashers homebrew club
- Beer tools
- Bier keurmeestersgilde
- BREW your own
- Celebrator Beer News
- Freshops
- Hobbybrouwen.nl
- Hop Shop (UK)
- Hop Union (USA)
- Hopfenmuseum (D)
- Hopfentropfen (CH)
- Keith Royster's RIMS
- Maltose falcons
- Michael Jackson Beer Hunter
- Muntons
- New Zealand Hop Marketers Ltd
- S.N.A.B.
- Selbstgebraut (D)
- The Beer Info Source
- The Hop Page
- Veel recepten
- Wikipedia Encyclopedie
- Yankee Brew News