Sets and NewGRFs:

Houses Swedish Houses is a town replacement set for TTDPatch and OpenTTD for temperate, arctic and tropic climates.

Author(s): Irwe, as
Swedish Houses Picture
DOWNLOAD (TT-Forums)

Trains Swedish Trains is a NewGRF set consisting of several trains and wagons operating in Sweden, both current and historical.

Author(s): AndersI
Swedish Trains Picture
DOWNLOAD (TT-Forums)

Town Names This is a small town name GRF with two name lists. One with a fake name generator, one with 128 real names (+ the fake generator to cater for OTTD's big maps).

Author(s): AndersI
Swedish Town Names Picture
DOWNLOAD (TT-Forums)