Links Page - in no particular order
Amstrad - Copyright Owner of Sinclair Technology computer products
ZX-Team Homepage - main page of ZX-Team which has many interesting information and also details some photo's and descriptions about what went on at the ZX-Team Meetings.
Kai Fischer's Homepage - website made by ZX-Team member Kai Fischer, one of the most active hardware developers in the ZX-Team. Needless to say, his website is very interesting!
Andy Rae's Page - Andy made a website about the ZX81, one of his projects is what I did long time ago: building a ZX81 based on the ZX80. He is doing it on experimenting PCB using wires to make all connections between ICs.
ZX81.nl - Downloads and links for the ZX81 - emulators and ZX81 software
Keith's ZX81 Projects - ZX81 projects in programmable logic - from simple programmable logic chips until complex ones - G007 Hires Graphics Pack description and ROM
ZX81 - The Archive - Emulators - Pfiles(software for ZX81) - manuals and schematics
Wilf Rigter's pages - His Hardware ideas and schematics for ZX81กก
Clive.nl - Website with some info about ZX hardware as well as original hardware items for sale
Andre's page at ZX-Team - Several games for ZX81
Bodo's ZX97 - FPGA design ZX97 with LCD interface integrated
Jupiter Ace - website with lots of info about the Jupiter Ace computer