| Planet Sinclair: Provides details of Sinclair's products from the 1960s to the present day, with a wide range of additional information about Sinclair software houses, personalities, magazines, and of course Sir Clive himself. |
| Home Electronics Service: Service, hardware and software providers for Sinclair QL and Z88. Located in San Antonio, Texas, USA. |
| Sinclair Archaeology: Details of Enrico Tedeschi's comprehensive collection of Sinclair memorabilia, dating back more than 40 years. |
| Sinclair Computers: Retailers of used Sinclair computers. |
| 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. |
| 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. |
| The Lil Old Sinclair Computer Technical Information Repository: Technical information concerning ZX Spectrum and ZX81, including instruction and service manuals, layouts and schematics. |
Classical
