| GT2ModelTool | 
pez2k | 
CDO to OBJ / OBJ to CDO converter for GT2. Requires very strong knowledge of the CDO format to use. | 
| GMCreator | 
Adeyblue | 
Tool for editing Gran Turismo 2 menus, foreground + background images and widgets. | 
| GTSeq2Midi | 
xan1242 | 
Converts .seq music files to midi. | 
| GTVolTools | 
Adeyblue | 
Tool to extract and recompile .VOL files from GT2, its demos, and GT2000 | 
| GT2DataSplitter | 
pez2k | 
Convert the carparam files in Gran Turismo 2 to and from CSV (car/event database) | 
| GT2TextureEditor | 
pez2k | 
Convert car texture files from Gran Turismo 1 and 2 into easily editable formats, and back into original format | 
| GT2SaveChecksumFixer | 
pez2k | 
Fix the checksum on edited GT2 savegames | 
| GT2CarViewer | 
Leo2236/pez2k/TheAdmiester | 
View GT2 and its demos' cars models and colors, export to obj - edited version with a few fixes | 
| GT2SolodataEditor | 
pez2k | 
GT2 solodata.dat file editing (car descriptions and special menu page IDs) | 
| TimViewer | 
rveach | 
Viewing TIM texture files, extracting their data | 
| TIMformatE.8BI | 
야가미 | 
Photoshop plugin for editing TIM image files | 
| GT2UsedCarEditor | 
pez2k | 
Tool to edit the available stock in the Used Car Dealerships in Gran Turismo 2 | 
| GT2CarIDConverter | 
pez2k | 
Convert GT2 car IDs to and from their hex hashes used in files and memory | 
| GT2CarInfoEditorCSV | 
pez2k | 
Convert the carinfo files in Gran Turismo 2 to and from CSV (replay names, car colour information, and more) | 
| mkpsxiso | 
LameGuy64, Silent & Others | 
Builds PlayStation CD images | 
| mkpsxiso GT2 config | 
pez2k | 
mkpsxiso configurations for building GT2 disc images | 
| PSound | 
snailrush | 
Plays various PSX and PS2 sound files. |