I don't have the time to make it more up to date. Other people should use the regular sites . The main purpose of Internet software is transferring data. Internet clients cannot work with every kind of data they transport. For that, they depend on the services other, more dedicated programs offer.
Internet clients have to be told which helper to use for which kind of data.
Most clients come with a full set of such definitions, and clients using Internet Config get that information there. The default definitions have grown to a consensus. The applications referenced as helpers in the default settings are chosen mostly because they are freeware. Other applications may be better. Below the most current helpers are listed.