Important Resources

The following is a set of links to information that I find important for one reason or another.

Important Articles

qmail howto - This particular how-to document is largely what I based my own qmail installation on.
OSS Licenses - This is a brief comparison of OSS licenses which is important not so much for the content, but the listing of many popular licenses. See also OpenSource.org. Combined these two resources can be important to my own efforts in finding and deciding on a license(s) to release my own software under.
Port Scanning with NMAP - a good resource for basic firewall security testing.

Mhonarc is an email list archiving utility that I plan on implementing at some point in the future so that I can maintain a personal archive of the lists that are important to me.
VMWare is a virtualization software very similar to Microsoft's Virtual PC. You can run an OS inside an OS with this software - great for testing, or for accessing a Windows environment from within Linux or vice versa.
LibEvent provides a mechanism to execute a callback function when a specific event occurs on a file descriptor.
memcached is... surprise! a caching mechanism. It's a good one.

Inter7 makes a series of mail software that works with qmail that I have come to rely on over the years.
Qmail.org is not the official qmail site, but it's an important one nonetheless. Links to user contributed patches and documentation and important qmail resources.
The Apache Foundation brings us stuff like the apache httpd server, lucene, and other very useful open source projects.
DJ Berenstein's top level page with links to djbdns, qmail, and other useful software.
Shawn Hogan put together some code to enable memcached server support in vbulletin
Filesystem Hierarchy Standard - I caught this link in Essential CVS by Jennifer Vesperman (O'Reilly Publishing). It appears to be a specification for the standardization of directory structures - though I'm unsure if this is the actual standard that everyone follows.
Backup with RSync