Web Mining Service is a propose for a new service to store and share information and data about the user browsing history and behaviour. The service provides to users the capability to store information about his own experience using Web systems and gathering information about the experience of other users. The core of the WMS is a server with a database management system and a application server using the solution of Sun called GlassFish. This solution provides all the necessary tools and technologies to implement a project of this features. The core system provides API to store and retrieve information about user behaviour. As proofs of the API and the core system Google Chrome extension and a different module has been created. The module shows the collected log file. We have created a module which analyze collected public log file and shows result in different graph. I have created View Statics Module use the past experience of the clients to predict the response time of the next user request. This Add-on retrieves the information about the last samples of response time over a given URL and calculates the mean value to predict the next value.