ZaZ tools for Grand Prix 4. A collection of some of the most important tools required to update the game (including updating the cars and tracks). It includes Car Set Manager (CSM) v1.26 Beta, Track Set Manager (TSM), Slimtex and Easywad. Note: avast! anti virus incorrectly reports that this file contains the "ZAZ Trojan horse" virus due to the similarity of the file names. This file is free from viruses.

GP4 Builder is an ideal tool for those wanting to edit tracks, or many of Grand Prix 4's game files (supported formats are .gp4 files (but flashlights), .3ds files, and .wrl files (export only)). Check the readme for a full description.

Carset Manager allows you to use various different carsets with GP4 at one time. Required to download many new mods/carsets and updates. Download link to CSM page - download included in ZaZ tools.

GPxPatch is a real-time extension for GP3, GP3-2000, and GP4 that includes features like official tv-style information, detailed on-screen race information, a track manager, a carset manager, extended save games, 3D sound, event sounds, internet play, taking screenshots, and more.

TeamEditor is an all-in-one editor for Grand Prix 4, allowing you to edit many aspects of the game. It is the result of the fusion of CamEditor (Cameras editing), TyrePos & TyreSet (Tyres), TeamEditor (Performances), LiveryEditor (Team Management) and On the Gridline (Performances calculator) and goes further in Team editing and management for GP4.

Allows you to patch files into every track's WAD files in one-click, unlike having to do this 17 times as in GP4-Master.

GP4Tweaker allows you to edit (tweak) many of Grand Prix 4's game aspects. This includes the implementation of certain aspects of the 2003 season qualifying rules, cockpit view changes, and much more. Recommended.

This is the successor of HOF2Lap. It's a game/hotlap file checker for GP3, GP3-2000 and GP4. Added GP4 support in v3.00

LapCompare is a Graphical User Interface(GUI) for René (SDI) Smit's hofxlap, a hotlap file checker for Grand Prix 4 (GP4).

LapCompare allows you to view and compare hotlap/quickrace data. From now on no more typing in Excel sheets etc. Just open your hotlaps in LapCompare and hit the 'Compare' button on the toolbar! Opens an overview window for all loaded hotlaps with: position, drivername, laptime, gap, split1, split2, sector1, sector2, sector3, target (time based on best sectors).

In the overview window you can sort columns on split- or section times by clicking the column header.

An editor and viewer for the GP3 3D files.