I'm not sure how relevant this is to the EAD list since developers and programmers at your institution may already be members of the code4lib listserv, but I figured I would forward it here. The xforms4lib listserv linked below is the best way to follow updates to the web form-based EAD editor I am developing and recently announced here. Since many of you probably also work with other metadata formats (MODS, DC, etc.), you might be interested in following projects that are developing XForms solutions for creating and editing those types of records as well.
University of Virginia Library