I am wondering whether there is any accredited university for doing phd online. I am currently doing MS in a University as a regular studen parallel to my job. It worked because I have many years of experience in the software industry and currently aging 34. My MS will be finished in next month. My company allows me enough time for study and research. So I am looking for an online phd which enables me to continue my current job and invest extra time for research (as I did in MS).

Searching in google returns many results, but it is difficult to choose from them. Is there really any good online phd possibility in the software related area? Does any of you have any idea and guide me choosing a good one?