I assume you mean the C # client library for Solr. You really don't need to worry if Solr is written in Java, there are many different client libraries that you can use to communicate with Solr without using java. You just need to install Solr in a Java servlet container, such as Tomcat, to provide the xml configuration, mainly the schema.xml and solrconfig.xml . After that, you can start using your favorite client library, written, for example, in C #, to contact Solr.