User documentation

A good starting point is the documentation page on the wiki.

The wiki also contains a fairly up to date list of plugins.

Developer documentation

Whitepapers

Universal Relational Storage for Geometric Primitives provides a detailed discussion of how K-3D flexibly stores geometric data, and what this flexibility means for researchers and developers.

Overviews

The K-3D Developers' Wiki covers a broad range of how-tos, design discussions, and architectural information.

Reference

The C++ Reference Documentation covers namespaces, classes, methods, and members, and is automatically generated using Doxygen.

The Python Reference Documentation is automatically generated using Epydoc.