R/C Web Austria: An Austrian index of R/C related websites with links to clubs, private pages, and shops. With English and German option.
R/C Web Directory: Radio controlled model aviation oriented web sites index compiled by Tower Hobbies.
RC Aircraft Links: RC model aircraft links site for shops, suppliers, clubs, and personal. You may submit your RC site for listing.
ScaleModel.NET: International list of scale model related web sites including radio control links.
The R/C Source: Radio controlled model aviation oriented web sites index and several other helpful services by Hobby People.