Here are some links to other pages containing information about the Quill, Quill games and other related tools
Gareth Pitchford's site containing useful Quill information and his own games
Article by Stefan Vogt looking back at Gilsoft's systems
Stefan Vogt's interview with Tim Gilberts of Gilsoft
Some information on the Atari version of the Quill and ports of some Quill games
Page created by the original author of the Quill
The original Quill disassembler (which can also convert Quill files to Z-machine format)
An article by Tony Longworth in which he replays his Atari game, Moonstone
An excellent and easy to use adventure mapping tool
A set of tools that can be used to create annotated disassemblies of Spectrum code