On this page I have grouped all links to the items, which can be downloaded from other pages of this site. Just to find them easier.
Intersection ported to Blender 2.8
Handle Panel ported to Blender 2.8
Vertex Tools ported to Blender 2.8
Camera Utilities Blender 2.8, only
e-book: Introduction to Blender 3D. (Deprecated, because it describes Blender 2.7. This is an excerpt from the complete guide);
e-book: "Programming Add-Ons for Blender" (introduction to Blender API);
Svgtex - Blender 2.4x plugin for vector textures (its open source code contains a fast SVG renderer, written in the C++);
F-4E "Phantom II" scale drawings (my drawings, from 1988 - just for the curious readers);
MDeform (I did not use this add-on since 2014, thus I declined to port it to Blender 2.8)
Bevel (replaced by the standard Blender 2.6 command)
Knife (this script was written by chromoly, not me. Like the Bevel add-on, it implemented another feature missing in Blender 2.5. The standard Knife command was reintroduced in Blender 2.6)