I am working in a software company based in 571 North Ana Lane, Romeoville, IL, US, 60446, we are providing all kinds of website services,development,designing,customization,integration,mob application,web application,CMS,SMM,on and off page SEO etc.
For front end we are using HTML5, CSS, Dreamweaver, Coral Draw, Illustrator.
And for development we will use PHP or WordPress as they are customized and are very preferable from Google's point of view. Google prefer these platforms for better ranking. (Or any language e.g ASP.NET, JavaEE...