MyDSL is handled and maintained mostly by Robert Shingledecker and hosted by many organizations, such as ibiblio and Belgium's BELNET. There are 2 areas of MyDSL - regular and "testing". The regular area contains extensions that have been proven stable enough for everyday use and is broken down into different areas such as "apps", "net", "system", and "uci" ("Universal Compressed ISO" - Extensions in .uci format are mounted as a separate filesystem to minimize RAM usage). The "testing" area is for newly submitted extensions that theoretically work 'as advertised', but may have any number of bugs.