The Architecture of Open Source Applications
aosabook.org
aosabook.org
http://news.ycombinator.com/item?id=2904425 (14 comments)
http://news.ycombinator.com/item?id=2598643 (LLVM: 29 comments)
http://news.ycombinator.com/item?id=4211480 (Nginx: 29 comments)
[1] http://neilernst.net/2013/01/25/teaching-advanced-software-e...
I guess that means, thus far, the book is about a third of each: very interesting, modestly interesting, and mediocre. Not too bad considering each chapter is written by different individuals.
edit: Reading bit more about the project, all royalties go to Amnesty. Nice! Guess I could try finding epubs online "somewhere" and donating to Amnesty directly instead.
Edit: GitHub actually has a good list of trending repositories that you can filter by language. Most C projects seem to be libraries, but you might be able to glean something interesting - https://github.com/trending?l=c&since=monthly