Spy and Master Spy text editors from A.R.K. (Applied Research Kernel), formerly commercial programs, are now available for free download from Editors and Viewers page. Includes a manual for Master Spy, but manual for Spy to follow.
Thanks to various people, I have been able to preserve version 2.4 and 3.0 of Spy, and versions 1.3, 2.1 and 3.3 of MasterSpy. I’m very grateful to Richard Howe of A.R.K. for permission to make these and the manuals and Configuration Parameter Sheets available from http://www.dilwyn.me.uk/editview/index.html