This SourceForge project is to document, support, and make available a Plugin for export from OmniOutliner (Mac OS X-only) to an XML format suitable for processing in the ConTeXt macro package. The core of the project consists of an XSLT transform on the OmniOutliner side, and a small ConTeXt module to allow for transparent typesetting of the generated XML file.
There is also a note on installing the plugin with OmniOutliner 3 standard (i.e., the cheaper, non-pro version).
The resources for this project currently comprise: