Apache Tika already performs Named Entity Recognition using Open NLP and Stanford Core NLP. Natural Language Toolkit is another open source python library and I believe it will be a great idea to have NLTK integrated along with Tika.
NLTK can extract NER as well as classify them. For this purpose I, along with Prof Chris Mattmann have published NLTKRest, a python pip/setuptools installable module that exposes NLTK as a REST service.
I have tested the working of Tika along with NLTKRest on my local repository and will soon submit a pull request.
Link to rest server: https://github.com/manalishah/NLTKRest