ZX-TEAM - An 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. ZX81 Download Page - A ZX81 software archive. 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. Obsolete Computer Museum's ZX-81 Page - Technical specifications and pictures of the Sinclair ZX81 with comments from other ZX81 owners. Sinclair ZX81 Collection - Collection of original Sinclair ZX81 hardware, software and literature. Photos and description for each item. Sinclair ZX-81 back from the dead - Tony Smith writes about the availability of ZX81 DIY kits. Small black box of computing desire - The BBC reminisces about the memory-efficient programming motivated by the 1k ZX81.