Treebeard is a system of CGI scripts that create an open topical forest. This is a community Web site approach that lets each user tend his or her own branch of the tree. It includes the treebeard, treedonly, treeadmin, and treeimage CGI scripts.
Ivan Illich proposed that there be Skill Exchanges where students can come to find lists of teachers. Illich Post is a single CGI script that creates an individualized Skill Exchange just by writing one HTML file.
Ivan Illich proposed Peer Matching facilities where people could come to find other people to do specific things together with. Ivan Post is a single CGI script that creates an individualized Peer Matching site just by writing one HTML file.