I speak at a lot of conferences, on a variety of topics, including the Apache HTTP Server, OpenStack, and the Apache Software Foundation.
I used to list all the conference I've spoken at, but the list was out of date, and incomplete. Suffice it to say, my office is largely wallpapered with conference name badges.
Many of my presentations are on Github.
In the next few months, I'll be at the following events (and speaking at some of them: