Which solution for a detailed product search?

I need to build some kind of product search and i'm not sure, which way I should go.

Requirements:

Proximity Search
Custom Ranking
Auto-correct-Suggestions, like in Google when you type "Winipedia", it suggest "Wikipedia".
Indexing PDFs as field value of a search entity
German Language Support for Autocorrect-Suggestions
Auto-complete support

I tried it with AWS CloudSearch, but their support sucks if you don't pay extra for support and they don't support German yet, nor Auto-complete.

Is there any search solution with all the functions I need? Elasticsearch looks good, but I can't find any detailed feature list about it.

Thanks in advance for any help!

Regards Nils

Solution

Both Solr and ElasticSearch have the features you need, choosing between them is only a matter of taste. :-)