Chicago Area Timex/Sinclair Users Group - Contact information and news of the group's forthcoming events.
Club QL International - Provides a monthly newsletter on QL matters, with back issues downloadable from the site.
Timex/Sinclair NorthAmerican User Groups - Provides information about the groups' activities and links to related Sinclair and Timex/Sinclair websites.
ZX-TEAM - A very active German Sinclair ZX81 users' group. Site offers information about the Sinclair machines and the group's activities, including news of forthcoming events. (In English and German)
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