Many IT professionals supplement their income with various side projects. For years, I ran a Web server in my house and did Web development work on the side to bring in a few extra dollars. Even now, I write for TechRepublic.

Freelance work is not always about the money; sometimes, these side gigs encourage us to learn new things, lead to the start of a new career as a consultant, or just give IT pros something to do with their free time.