ZX81 Download Page A ZX81 software archive. http://www.zx81.nl

Matthew's ZX81 Homepage Software library, reviews, news, emulators for various platforms. http://www.hh.schule.de/hhs/mjaap/zx81.htm

ZX81 Virtual Community Contains links, a scanned copy of the ZX81 manual as well as ZXTAPE, a DOS-based utility to transfer ZX81 software from a PC to a ZX81 or tape recorder, and to transfer ZX81 software from tape back to PC. http://www.geocities.com/SiliconValley/Ridge/9965/index.html

Kevin Baker's ZX81 Page Page with support files for Sinclair ZX81 and Timex TS1000/TS1500. http://edge.edge.net/~krbaker/zx81.html

Sinclair ZX81 Webring Webring with a main goal of supporting the ZX81 community with information about activities for the computer and its clones. http://home.t-online.de/home/sinclair_zx81/zx81_wbr.htm

System Variables of the Sinclair ZX81 Memory map of the RAM reserved by the system. http://www.penelope.demon.co.uk/zx81/sysvars.html

Project 81 Aims to preserve ZX81 related documents in digital form. http://www.hh.schule.de/hhs/mjaap/project.htm

ZX-TEAM A very active german Sinclair ZX81 users group. http://www.zx81.de/

Steven's ZX81 Computer Links and information from an enthusiast. http://www.geocities.com/CapeCanaveral/Hangar/1969/zx81/

ZX81 Stuff Collection of ZX81-related documentation plus hardware and software projects. http://www.howell1964.freeserve.co.uk/ZX81/ZX81.htm

ZX81 Home Page A ZX81 FAQ, emulator and software links. http://www.honneamise.u-net.com/zx81/

Zebra Systems, Inc. Timex-Sinclair ZX81 computer kits for sale. http://www.zebrasystems.com/zebrasystems/zx81/index.html

ZX-180 A modern version of the ZX80, ZX81 for the home hobbyist builder. http://opendesign.cx/ZX180.htm

Sinclair ZX-81 back from the dead Tony Smith writes about the availability of ZX81 DIY kits. http://www.theregister.co.uk/content/archive/13785.html

ZX81 - Planet Sinclair Information, photos and resources for the Sinclair ZX80, including a detailed account of its development extracted from Ian Adamson and Richard Kennedy's book "Sinclair and the Sunrise Technology". http://www.nvg.org/sinclair/computers/zx81/zx81.htm

The ZX97 by Wilf Rigter A project to design and build an enhanced, low power discrete logic version of the ZX81. http://www.howell1964.freeserve.co.uk/ZX81/ZX97.htm

Sinclair ZX81 Benchtest Article from Personal Computer World by David Tebbutt. http://www.nvg.ntnu.no/sinclair/computers/zx81/zx81_pcw0681.htm

Rodney Knaap: Build your own ZX81 ZX81 hardware website featuring a project for building your own ZX81 with discrete components as well as Wilf Rigter's ZX97. In English, Dutch and German. http://www.angelfire.com/ab6/rodneyknaap

Sinclair ZX81 FAQ Some common questions about the ZX81. http://www.honneamise.u-net.com/zx81/zx81faq.html

ZX81 CD Game Collection Suppliers of ZX81 games and emulators on CD, enabling you to reproduce the ZX81 on your Windows PC. http://www.cd-r-direct.co.uk/ZX81.htm