* [How Athena Works](http://web.mit.edu/ghudson/info/athena), by Greg Hudson, longtime Athena engineer and SIPB member. Note that sections 5 through 11 don't really apply any more.
* [The e-mail threading algorithm](http://www.jwz.org/doc/threading.html), by Jamie Zawinski (jwz), old Netscape hacker. Interesting not only for the algorithm per se, but for his description of the process leading to its development, and his [lost argument with Netscape 4's engineers](http://www.jwz.org/doc/mailsum.html) against replacing the algorithm with something overengineered
* [HOWTO Encourage Women in Linux](http://valerieaurora.org/howto.html), by Valerie Aurora, a Linux kernel hacker.
+ * [The Unix Time-Sharing System](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.33.1204&rep=rep1&type=pdf), by Dennis Ritchie and Ken Thompson. From 1974, but still almost entirely accurate. Sections 3, 5, and 6 are particularly good
## Books online
* [The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!)](http://www.joelonsoftware.com/articles/Unicode.html)
* [The Old New Thing](http://blogs.msdn.com/oldnewthing/), by an engineer for MS who writes about stupid hacks in the name of backwards compatibility
* [Jamie Zawinski's](http://www.jwz.org/doc/) writings / rants. jwz developed Netscape 1-3, and played a role in the open sourcing of Netscape as Mozilla.
+ * [Paul Graham's Essays](http://www.paulgraham.com/articles.html) on Software, Startups, and Writing.