AlphaComputing.net is powered by many open-source, premium and free services. We use many plugins and also have many custom scripts.
We use the popular Arras Theme slightly custom modified to fit the style of the blog.
As you have probably figured out by now we are very reliant on YouTube.com for our HD, well done, high quality video versions of our posts.
We also use feed-burner for our feeds.
Hosting wise, we have all our content backed up and hosted on multiple JustHost accounts.