1. Tubetoolgenerate tubing between two selected polygons (now supports 2 objects simultaneously in edit mode) b2.8+
2. Mesh tiny cada tiny set of unmissable CAD functions ( VTX, XALL ...) for Blender
4. RawrThe Blender Python blog code depo
5. bpy externallexecute scripts in a running Blender session from any decent text editor.
6. GL-filletthis tool is redundant now. select a vertex and press shift+ctrl+B to bevel and mouse wheel to subdivide for fillet+divisions. The only reason i'm leaving it up is it has some useful bgl drawing code.
8. BlenderPythonRecipescurated snippets for bpy (mostly for Blender <= 2.79 ), some changes are needed to maintain compatibility with 2.8+