I had believed that this book was free, I think at some point it was,
but following a comment from johand, it is clear that this is no longer
the case, and a result, not suitable for this list.

Added 6 statistics books to Mathematics section and one book to the R section

I'm not sure exactly what section this belongs in; it seems to be influenced by several fields.  If someone else knows a better section, I'd be happy to move it.

Added complete titles as part of 'The Architecture of Open Source Applications'.  
Moved entry to be with 'The Performance of Open Source Applications' which is in the same series.

Moved "AngularJS in 60 Minutes" to new sub-section Angular.js

[COBOL] (#cobol)  works but [COBOL] (#COBOL) doesn't

This reverts commit dd0b69d0.

Corrected the internal link to the Windows 8 section.
Corrected the external link to Windows Phone Blue Book

I had a blog post here:

http://www.gep13.co.uk/blog/free-ebooks/

which listed some free eBooks that I was aware of.  I have taken the programming related ones, and added them to this list.

Added Open Government; Collaboration, Transparency, and Participation in Practice by Daniel Lathrop, Laurel Ruma: O'reilly Media

Add http://gitimmersion.com/