<Tr> <Td> nginx </Td> <Td> NGINX, Inc . </Td> <Td> 141,443,630 </Td> <Td> 15.60% </Td> <Td> 137,459,391 </Td> <Td> 16.61% </Td> <Td> - 0.88 </Td> <Td> green </Td> </Tr> <Tr> <Td> GWS </Td> <Td> Google </Td> <Td> 20,799,087 </Td> <Td> 2.29% </Td> <Td> 20,640,058 </Td> <Td> 2.21% </Td> <Td> - 0.08 </Td> <Td> blue </Td> </Tr> <P> Apache, IIS and Nginx are the most used web servers on the Internet . </P>

What is an example of a web server