Links

If you know of a website that should be added here, Contact me and let me know the website link and where it belongs on this list.

Last updated Oct 06, 2014.
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Cheating Tools
* Google. Depending on your OS, game, and what you want to do nothing beats a web search for finding tools/software.

Atlava.com Large selection of tools, with several private releases as well. From the Atlava forum with new frequent tools added. Forum also has Trainers/Hacks/Bots/ Tutorials/Programming
ArtMoney.ru Game cheating software (memory scanner), has a free SE and paid Pro edition. Seems to be actively developed, but for most options users will need the pro version. Either version has problems with Windows 7 and/or any 64-bit operating system, see their FAQ.  Has several options, and saves your cheats to tables that can be shared with others.
CheatEngine.org Official CE site, and actively developed. Memory scanner allows cheating in any PC game, emulation games, or even modifying any running program/game/application. Can be used in basic mode for most cheating or advanced mode for debugging, code injecting, script writing, and lots more. Cheats are saved into tables and can be shared with others. Includes a great built-in game trainer maker. Site includes downloads, tutorials, CE tables, wiki, and forum.
Cheaters-Heaven.com Large selection of various game tools (mostly software no longer updated) including debuggers, editors, trainer creation programs, and more. Also the site has trainers, cheats, guides, and tutorials.
Elitegrounds.net Direct download list of various trainer creation/making programs. The site also includes tutorials, trainers, hacks, bots, and mods - all for a few specific games.
GameCheater.deviant.ru No longer developed, since 2002, shareware game cheating software (memory scanner). Has several searching options and ability to save cheats to a cheatlist. Last fully tested operating system was Windows 2000, so no support for 64-bit systems. Not much else is known as the site information is very light.
TimsVault.com Extensive list of game cheating tools including memory scanners, trainer creation/makers, savegame editors, etc. Website seems to be abandoned as the last update was in 2008.

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Game Hacking Forums
Atlava.com Trainers/Hacks/Bots/Tutorials/Programming
AutoItBot.de German, Trainers/Hacks/Bots/Tutorials/Programming (Several languages)/AutoIt Scripts
DeviatedHacking.com Trainers/Hacks/Requests/Programming
elitepvpers.com German/some English, Trainers/Hacks/Bots/Macros/Tutorials/AutoIt Scripts
forum.CheatEngine.org Trainers/Hacks/Requests/Scripts/Tutorials/ Programming/CE Tables
GameHacking.com Trainers/Hacks

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Programming Languages
AutoItScript.com Freeware, powerful script programming language, can be used to automate any software with keyboard and mouse support. Used to create applications, game trainers, and especially game bots. Includes many tools (such as Koda GUI form designer). Website includes downloads, forum, and tons of information. ** Do not post in their forum anything gaming related as it will get you banned.
FreeBASIC.net Open-source, free, multi-platform BASIC compiler, with syntax similar MS-QuickBASIC (including the GFX statements), that adds new features such as pointers, unsigned data types, inline assembly, a pre-processor and many others. -- I created a library and instructions for using FreeBASIC for game cheating.
Lazarus.freepascal.org Lazarus is a Free Pascal programming language, and is LGPL licensed (free). Actively developed, and with new releases often weekly. Has a great GUI, debugger, compiler, and more. This is a true programming language and is very useful beyond making just game cheats. The website has tons of information, downloads, forum, and IRC channel.

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Trainer Download Sites
* Several sites now require payment to download trainers. Such sites are marked below.

Cheaters-Heaven.com Large collection of trainers. Also the site has cheat/game tools, cheats, guides, and tutorials.
CheatHappens.com (Pay trainers) Many trainers, guides, tutorials, message boards, and more.
DeviatedHacking.com (Pay trainers) Trainers and a forum with Trainers/ Hacks/Requests/Programming.
DLH.net Game trainers, cheats, patches and bug fixes. Also has a German game forum.
GameBurnWorld.com Large selection of trainers, no-cd hacks, patches, and other useful items.
MegaGames.com Many trainers, patches, mods, and hacks. Has a trainer/cheat forum but seems very inactive.
MoFunZone.com Frequently updated trainers, patch, and cheat site.
szemelyesintegracio.hu Trainers by advanced CE user Geri, also includes many advanced tutorials..

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Tutorials
* Many are also available in various places on most of the game hacking forums listed above too. I have listed forums below that have a tutorial section.

AutoItBot.de German forum. Large section of tutorials and has several categories available. The forum also has Trainers/Hacks/Bots/Programming (Several languages)/AutoIt Scripts
elitepvpers.com German/some English forum. Has many sections of tutorials, and also has Trainers/Hacks/Bots/Macros.
szemelyesintegracio.hu Tutorials by advanced CE user Geri, site also includes many trainers.