Cocoda is a web application to manage and create mappings between knowledge organization systems, such as classifications, authority files, and thesauri. The application is developed as part of project coli-conc at GBV, funded by DFG.
There is also a user manual:
Feedback and contributions are very welcome: please use the issue tracker for bug reports and feature request!
For technical details, including installation and configuration see the project repository at GitHub.