Produced by: Somebody…anybody know?
Releases:
* Ultima 4 Map Editor (75.2 KiB, 81 hits)

A utility to edit the graphic tiles in Ultima 4. Requires EGA graphics and the original shapes.ega file.

Releases:
* Ultima 1, 3, 4 & 5 Cheat (19.2 KiB, 217 hits)

A cheat program that can be used for Ultima 1 through to Ultima 5 (but not, according to its name, for Ultima 2).

Produced by: Nodling Dragon
Website: Ultima Tech Info and Patches
Releases:
* Atari ST File Formats (2.7 KiB, 51 hits)
* EGA Driver Information (6.6 KiB, 52 hits)
* Bugs in Ultima 4 (5.2 KiB, 71 hits)

These three files from Nodling Dragon include a description of the Ultima 4 game data file formats, although only for the Atari ST version (u4atarist.txt), general information about the EGA driver that the game uses (u4ega_driver.txt), and a list of bugs and undocumented features of the game’s PC version (u4_bugs.txt).

Produced by: Nodling Dragon
Website: Ultima Tech Info and Patches
Release:
* U4Encode Source (4.2 KiB, 64 hits)
* U4Decode Source (13.8 KiB, 60 hits)

These two files allow you to de-compress (decode) or compress (encode) Ultima 4’s game data files, which have been compressed using the formerly-patented LZW algorithm.

NOTE: the packages here include only the source code necessary to compile a command-line utility in each case.

Produced by: Nodling Dragon
Website: Ultima Tech Info and Patches
Releases:
* Replacement for avpatch (7.6 KiB, 90 hits)

Nodling explains: “You can’t install the Ultima 4 Upgrade under DOS, because avpatch.exe is a Windows console application. The new avpatch.exe can be run in DOS, Windows and DOS emulators.”

Produced by: Gary Thompson
Releases:
* Character Editor (39.2 KiB, 122 hits)

A character editor for Ultima 4.

Produced by: Centurion
Releases:
* Map Editor (38.8 KiB, 55 hits)

A map editor for Ultima 4. Be sure to read the included documentation, as the process of editing the map is somewhat complex at first.