I had developed PHP port of my CMS which i had developed for my first website Turksportal.net since 2004. We used this framework to build website suite specialized for real estates and e-commerce. Software was completely written with SEO perspective. Framework also has own template system, social features.
We are also started to develop websites on WordPress with using its CMS functionalities since 2009.
I had also developed numerous WordPress plug-ins and themes for clients.
I also developed some experimental applications for Facebook & iOS.