The purpose of this paper is to provide a more current evaluation and update of web mining research and techniques available. In the today’s view of web mining is to extract useful information from various websites and organizations websites. This paper will elaborate various tools and techniques of web mining that can be used now a day for web mining. The Data mining techniques can be used by system to extract the required knowledge. Now a days web mining is useful in Social media applications, Electronic commerce websites, various web transaction, etc. and it’s not only extracting data but also discover the knowledge about any topic required by web user. The proposed paper is focusing on various tools, techniques and applications of web mining.