commons-language is under developent as an extension of the project: https://github.com/gtoffoli/commons , i.e. as a Django app. It is run as a separate server process, providing services to other web application through HTTP API. Higher level functions are implemented in a further app, commons-textanalysis.
The full documentation of commons-language is in progress. Partially obsolete design ideas can be found at https://www.commonspaces.eu/help/evaluation/ .
commons-language was initially created as a clone of NLPBuddy; it shares with NLPBuddy the dependency on the Spacy library. The GitHub repository of NLPBuddy is still there, but it seems that the live demo is off. Although commons-language exposes its original functionality through HTTP API, we have kept almost unchanged, inside it, the interactive demo of NLPBuddy: you can access it at http://nlp.commonspaces.eu/ .