The Sinclair MicroComputer Museum  
   Online gallery of Sinclair products, focusing mainly on the 1980s computers.
   http://mudhole.spodnet.uk.com/~majik/sinclair/

Sinclair Archaeology  
   Details of Enrico Tedeschi's comprehensive collection of Sinclair memorabilia, dating back more than 40 years.
   http://www.etedeschi.ndirect.co.uk/sinclair/sinclair.htm

Sinclair Nostalgia Products  
   Site provides snapshots, MIDI files, screen savers, counter digits and information about a lot of hard-to-find clones of the Sinclair machines, focusing particularly on those from Eastern Europe and Russia.
   http://www.algonet.se/~rsm/zx/

alchemist:research  
   An organisation covering many topics, but mainly a Sinclair user group.
   http://website.lineone.net/~alchemistresearch/

SinTech Online-Shop  
   Dealer in hardware and software for Sinclair Spectrum and other 8-bit computers. Also the support-line for the ZX Spectrum User Club, Germany.
   http://www.sintech-shop.de

Home Electronics Service  
   Service, hardware and software providers for Sinclair QL and Z88. Located in San Antonio, Texas, USA.
   http://members.tripod.com/hes_computing/hes1.html

The Spectrum / ZX81 Technical Information Board  
   Web board for technical information about the ZX Spectrum and ZX81.
   http://members3.boardhost.com/8bit_ula/

Retrogamer - Sinclair Silicon  
   Photo gallery of Sinclair and Timex Sinclair computer products. Includes the author's swaps list.
   http://retrogamer.merseyworld.com/sinclair.htm

Australian Sinclair User Group  
   An open and unmoderated discussion forum for Australian based users of Sinclair and related computers.
   http://groups.yahoo.com/group/aussug/

Sinclair Computers  
   Retailers of used Sinclair computers.
   http://www.sinclaircomputers.com/

The Lil Old Sinclair Computer Technical Information Repository  
   Technical information concerning ZX Spectrum and ZX81, including instruction and service manuals, layouts and schematics.
   http://members.lycos.co.uk/eightbitula/