Greetings! Introducing Microsoft SQL Server 2012, which you can get for free in the U.S. Kindle Store (and we’re working on making it free in the Kindle Stores for other countries), looks to be the only full technology-focused ebook in the Top 100 Free list at the moment:

SQL ebook on Amazon list

If the ebook isn’t free yet in your Kindle Store, you can always get a MOBI file (as well as EPUB and PDF) via our blog.