For initial introduction of what Open Data Node is (or is supposed to be) please read a post on COMSODE blog.
Documentation is located in following places (ordered based on impotance and preference):
- Home page: http://opendatanode.org/
- Source code tree on GitHub: https://github.com/OpenDataNode/open-data-node
- Open Data Node in OpenData.sk Wiki: https://utopia.sk/wiki/display/ODN/
To make sure code matches documentation, having it together with source code is preferable. If that is not feasible for some reason, the next best thing is ODN space in OpenData.sk's Confluence Wiki.
Architecture and Design
Architecture of Open Data Node is maintained in public OpenData.sk Confluence Wiki at: https://utopia.sk/wiki/display/ODN/Architecture+and+Design
For details about releases of Open Data Node, see Open Data Node Releases.
For instalaltion and upgrade instructions, please take a look at Install and Upgrade Manual.
ODN consists of several modules, each with its own license. But overall, ODN is free and open-source.
For more information, please see: https://utopia.sk/wiki/display/ODN/Architecture+and+Design+-+Licensing