OpenTTD Manager is a freeware program that allows the user to check for OpenTTD version updates and change versions fast and easily. OpenTTD is an open-source recreation of the simulation game Transport Tycoon Deluxe that greatly improves many aspects of the original game.
GRF Wizard is a freeware program that serves as a GUI for the command-line tool GRFCodec, which is used to encode and decode GRF graphic files from the game Transport Tycoon Deluxe, TTDPatch and OpenTTD.
TTDX Configurator is a freeware program that allows the user to configure and update TTDPatch, a patch that provides gameplay enhancements and numerous bugfixes to Transport Tycoon Deluxe by patching its original binary.
NFO Editor is a freeware program for editing the NFO files that serve as a base for GRF graphic files for the game Transport Tycoon Deluxe, TTDPatch and OpenTTD.
After decoding a GRF graphics file with GRF Wizard and the GRFCodec, you’ll have an NFO (plain text) file, and one or more PCX or PNG image files. By editing the NFO file, you can alter the size and position from indivial game sprites (graphics). This is an almost impossible process to do by hand, while NFO Editor makes this a quick and effortless task.
TTDXC Pro is a freeware program that allows the user to configure and update TTDPatch, a patch that provides gameplay enhancements and numerous bugfixes to Transport Tycoon Deluxe by patching its original binary.
TTD Urban Renewal was a site hosting GRF graphic enhancements created by Andrés for the simulation game Transport Tycoon Deluxe. Since no more GRF files have been released there for a few years, that site was shutdown, but here you can find and download all those graphics and apply them to your TTDPatch or OpenTTD game.
Some of these GRF files are available for direct download from OpenTTD’s Online Content.