I maintain, or have created, a variety of pieces of software, mostly freely available in one sense or another.
I do quite a variety of gaming, and I've made myself a wiki for writing up gaming-related stuff.
I've also made a wiki for more general stuff, currently mostly sysadminning related.
I used to do a talk on Privacy and Anonymity in E-Mail about every eight months when I went to Waterloo (I now live in California :). Ah, memories.
To my great surprise, there's still a CSC page about that talk. Gives me warm fuzzies.
I was, long ago, in the process of creating a new MOO/MUD server called MOZ, which is written in the Oz language, a very elegant multi-paradigmatic language.
MOZ is designed to have all the good features of CoolMUD and LambdaMOO that I can reasonably implement, with the addition of support for multiple command languages (currently English and Lojban), the feature of being written in the language it implements, capability security, and more.