This section of the cexx.org site is kept available mainly for historical purposes, and is no longer actively maintained. Due to its age, many of the external links in this area are no longer valid. Unfortunately, rather than a simple '404' error, these days many defunct domains are purchased by domain squatters, porn advertisers and other less-than-reputable parties, and have occasionally been known to attempt installing malware. For this reason, we have temporarily disabled all external links while a better solution can be thought of. The unavailable links can be identified by a strikethrough over the link's text.