SketchUcation’s Plugin Store uses a versioning system. While the main page shows the latest release, you can request specific versions.

LibFredo6 is a widely used scripting library for FreeCAD that provides utilities to simplify and extend macro and workbench development. The "old version" typically refers to legacy releases before major API reorganizations; it was commonly bundled with or required by community workbenches to offer helper functions, GUI widgets, file IO utilities, geometric helpers, and compatibility wrappers across FreeCAD versions.

Some third-party SketchUp resource sites maintain clean mirrors with permission from Fredo6.