Is there is any body here work or use a web mining algorithm or any technique in web mining?

You can use many softwares for mining the web data like there are different ETL tools like pentaho,SQL Server Integration services or there are some other tools also like R or python all you have to write an API to extract data from the web.

Yes, there are many web mining algorithms. The difference among them is their application. Weka is a good application from the university of Waikato in New Zealand, sums up work from a lot of algorithms in one application. Depending on the type of data for machine learning different mining algorithms are used.