Glenda (the goodwitch) Sims is an accessibility consultant, speaker, author and trainer for Knowbility, a non-profit whose mission is "barrier free IT". She is also the Web Standards and Accessibility Evangelist for the University of Texas.

She recently co-authored the book InterACT with Web Standards: A holistic approach to Web Design. She gives back to the web by volunteering on the Web Standards InterAct Project and serving as co-lead for the W3C Open Web Education Alliance Incubator Group.