“Channel Editor for LG TVs” is a OS X program to edit channel list of LG TVs. These lists have to be copied from TV set to a USB stick and after editing the other way round.

You can edit the lists using multi selection drag'n drop, filter the list by name or type and apply sort orders from external lists.

The software has an english user interface (plus a german one).

Several devices from following series have been positively tested to work:
LB, UB, UF, UH (there is an incomplete list on the homepage). In doubt, simply try it.

Devices from the LA series seem to have a different format and can't be used.