Use b-semantic's API to extract and analyze web text.
The API contains endpoints for text extraction, entity extraction, similarity computing and URL recommendations based on similarity.
b-semantic is REST based, employs HTTP POST methods, and accepts JSON data types.
Use the text extraction service to extract the main text elements from a URL or HTML source code.
The entity extraction web service identifies entities.
Compare URL's, HTML Fragments or text by measuring their similarity.
Finally get recommendations based on website similarity.
IMPORTANT: This is one of the rare apis that explicitly supports the german language regarding semantic analytics!