Maintained by Ciro Continisio (GGJ Rome). If you want to add a link, please suggest it here or on Twitter @CiroContns.

About suggestions: There are a million tools out there, but this list is intended to be readable and useful, rather than an encyclopedia of ALL the software in the world. Don’t get annoyed if an obscure tool is not added.

Here’s the list of resources from this year’s Sponsors, along with some other stuff.

Here's a smaller list of tiny game making tools, perfect for beginners!

Note: Resources listed here are generally free, though some have paid plans for extra features.

Table of contents

Game Engines

HTML5 / Javascript

Frameworks

Tools

3D Modeling

2D and Vector Graphics

Animation

Other Graphic Tools

Coding

IDEs

Source Control

Audio and Music

Middleware

Task Management

Graphical

Text-based

Assets

3D Models

Textures / 2D Art

Audio

Fonts

Public Domain

Board Games

Miscellaneous

Unity tools

Other

Game Engines

Unity (powerful Asset Store, also check tools below)

Unreal Engine 4 (comes with source code, marketplace)

Cry Engine (comes with source code, marketplace)

Amazon Lumberyard

Scratch (no coding required, great for beginners and kids)

PICO-8 (simple, great for small jams, code examples)

GameMaker (great for beginners + marketplace)

Godot (open source!)

Construct 3 (web-based)

Stencyl (no coding required)

Defold (2D only)

Ren’Py (visual novels)

Twine (text-based games)

Inkle Writer (text-based games)

Adventure Game Studio

IRRLicht

RPG Maker VX Ace Lite (no coding required, 2D, does more than just RPGs)

Armory3D (open source 3D game engine)

Bitsy (very simple, 2D, runs in browser)

Gdevelop (open source, similar to Construct)

HTML5 / Javascript

Canvas Engine - http://canvasengine.net/

Pixi.js (fast WebGL and Canvas renderer) - http://www.pixijs.com/

CreateJS (HTML5/Javascript libraries) - https://createjs.com/

BabylonJS - (webGL engine) http://www.babylonjs.com/

Box2D (javascript 2D physics library) - http://box2d-js.sourceforge.net/

Phaser - http://phaser.io/

Superpowers - https://sparklinlabs.itch.io/superpowers

Cocos2D HTML5 - http://www.cocos2d-x.org/download

Processing.js (for visual designers) - http://processingjs.org/

p5.js - https://p5js.org/

Enchant.js - http://enchantjs.com

Codepen https://codepen.io/

PuzzleScript - https://www.puzzlescript.net/

Frameworks and Libraries

MonoGame (Open source version of XNA, actively maintained) - http://monogame.net/

Processing (Java) - http://processing.org/

Ogre3D (3D rendering engine) - http://www.ogre3d.org/

LibGDX - http://libgdx.badlogicgames.com/

OpenFL (Flash-like cross-platform API) - http://www.openfl.org/

Box2D (2D physics library) - http://box2d.org/
Chipmunk2D (2D physics library) - https://chipmunk-physics.net/

HaxeFlixel (Haxe) - http://www.haxeflixel.com

Heaps (Haxe cross-platform API) - http://heaps.io/

SDL (cross platform API for C/C++) - http://www.libsdl.org/index.php

SFML (multimedia library for C++) - https://www.sfml-dev.org/

Love2D (Lua) - http://love2d.org 

Raylib - http://www.raylib.com/

Openframeworks (C++ toolkit) - http://www.openframeworks.cc/

PyGame (Python) - https://www.pygame.org/

A-Frame (small, easy framework for web VR, includes small editor) -  https://aframe.io/

VRTK - https://vrtoolkit.readme.io


Tools

3D Modeling

Blender - http://www.blender.org

MakeHuman - http://www.makehumancommunity.org/

MagicaVoxel - https://ephtracy.github.io/

Vectary (online 3D modeling) - https://www.vectary.com/

Qubicle (Voxel Editor) - http://www.minddesk.com/

SketchUp - https://www.sketchup.com/

2D and Vector Graphics

GIMP (Photoshop-like) -  http://gimp.org

Paint.NET : http://www.getpaint.net/

Krita (digital painting) - https://krita.org/ 

Inkscape (SVG/Vector tool) - http://inkscape.org/
Aseprite -
 http://www.aseprite.org/

Pixlr - http://pixlr.com/editor/

Pyxel Edit - https://pyxeledit.com

Piskel (Online Pixelart & Sprite Editor) - http://www.piskelapp.com

Figma (Free Web-based vector graphics editor) - http://figma.com

GraphicsGale (Free) - https://graphicsgale.com/us/

Animation

DragonBones (skeletal animation) - http://dragonbones.com/en/index.html

Spine (2D skeletal animation) - http://esotericsoftware.com/

Carnegie-Mellon Motion Capture Database - http://mocap.cs.cmu.edu

Spriter (2D skeletal animation) - https://brashmonkey.com/

Other Graphic Tools

Tiled (tile editor) - http://www.mapeditor.org/

Texture Packer - http://www.codeandweb.com/texturepacker

Color Oracle (color blindness testing) - http://colororacle.org

Shoebox - http://renderhjs.net/shoebox/
Paletton (color schemes) -
http://paletton.com/

Image optimizer - http://www.imageoptimizer.net

Texture Generator Online - https://cpetry.github.io/TextureGenerator-Online/

Tilemancer (node-based filters tool for tiles) - https://led.itch.io/tilemancer

Fractorium Flame Fractal Generator - http://fractorium.com/

Coding

IDEs

Eclipse - http://www.eclipse.org/

Visual Studio Community - https://www.visualstudio.com/vs/community/

Monodevelop - http://monodevelop.com/

IntelliJ - http://www.jetbrains.com/idea/

Komodo Edit - http://www.activestate.com/komodo-edit

Notepad ++ - https://notepad-plus-plus.org/

Collabedit (text editor / chat hybrid with simple syntax highlighting) - http://collabedit.com/

Consulo - https://consulo.io/

Visual Studio Code (Text editor with some autocomplete) -  https://code.visualstudio.com/

Atom - https://atom.io/

PureData - http://puredata.info/

Netbeans - https://netbeans.org/

Source Control

Mercurial SCM (software only) - https://www.mercurial-scm.org/

Git (software only) - http://git-scm.com

GitHub (software + hosting) - https://github.com

Bitbucket (mercurial and git hosting) - https://bitbucket.org

Sourcetree (nice visual gui software for git and mercurial) - http://www.sourcetreeapp.com/

GitExtensions (similar to Sourcetree, but all FOSS) - http://gitextensions.github.io/

GitKraken (Git visual GUI, free for non-commercial) - https://www.gitkraken.com/ 

Git LFS (Large File Storage, useful for binary objects) - https://git-lfs.github.com/

Audio and Music

BFXR (sound tool) - http://bfxr.net

Audacity (Audio / Recording / Music) - http://www.audacityteam.org/download/

Reaper (Digital Audio Workstation) - https://www.reaper.fm/

Ableton Live (Digital Audio Workstation) - https://ableton.com

Cakewalk by Bandlab (Digital audio workstation - formerly SONAR) - https://www.bandlab.com/products/cakewalk

Bosca Ceoil (music tool) - https://terrycavanagh.itch.io/bosca-ceoil

Procedural Music - http://abundant-music.com (needs a Midi Renderer)

SynthFont - http://www.synthfont.com (Midi Renderer)

GXSCC - http://www.geocities.co.jp/SiliconValley-SanJose (Midi Renderer)

BeepBox (chiptune) - http://www.beepbox.co

Milkytracker (tracker) - http://www.milkytracker.org

ChipTone (BFXR’s big brother) - http://sfbgames.com/chiptone

Soundation (music maker) - https://soundation.com/

Music / SFX (Machine learning) - https://experiments.withgoogle.com/ai/sound-maker/view/

Otomata (generative musical sequencer) - http://www.earslap.com/page/otomata.html

Pixitracker (chiptune sequencer) - http://www.warmplace.ru/soft/pixitracker/

VCV - https://vcvrack.com

Middleware

FMOD (free tier) - https://www.fmod.com/

WWISE (free tier) - https://www.audiokinetic.com/products/wwise/

Task Management

Graphical

Codecks (gamedev specific project management, bucket list, time metrics, Discord integration)

Trello (project management, bucket list)

HackNPlan (project management, bucket list, time metrics, specific for gamedev)

Murally (pinboard, connects to Google Drive and Evernote)

Realtime Board (pinboard)

Mindmeister (mind mapping)

Lucidchart, Cacoo (diagrams and flowcharts)

Sligrid (pinboard, mind mapping, concept board; sign up with invite code: ggj18)

Notion (notes, wikis and tasks)

Draw.io (diagrams and flowcharts)

Asana (project management)

Project Libre (open-source Microsoft Project-type GANTT charts)

Text-based

Workflowy (Collaborative list editor, task lists)

Bear (flexible writing app for iPhone, iPad and Mac)


Assets

Everything - http://kenney.nl/

Everything - http://opengameart.org (most models in Blender format)

Everything (compatible with other tech too) - https://assetstore.unity.com/

Everything - https://search.creativecommons.org/

Everything - https://archive.org

3D Models

3D models - http://turboSquid.com

3D models - http://www.blendswap.com/

3D models - http://www.sketchfab.com

Very high quality assets - http://devassets.com 

Plenty of lowpoly models - https://poly.google.com/

Thingiverse (convert STL to OBJ using Blender) - https://www.thingiverse.com/

Textures / 2D Art

Textures - http://www.cgtextures.com

2D sprites and Flash backgrounds (.fla) - http://glitchthegame.com/

Textures (only partly free)- http://www.openfootage.net

Textures with PBR maps - https://3dtextures.me/

Audio

Music - http://www.newgrounds.com/audio

Music - https://expsyle.bandcamp.com/

Music - http://dig.ccmixter.org/

Music production - https://www.audiotool.com/

Music production - https://www.soundtrap.com/

Music production (Chip tunes) - http://sfbgames.com/chiptone/

Sound Effects - http://freesfx.co.uk

Sound Effects - http://soundbible.com

Sound Effects - http://freesound.org/

Sound Effects - http://99sounds.org/free-sound-effects/

Sound Effects - https://sonniss.com/gameaudiogdc2017/

Sound Effects - https://sonniss.com/gameaudiogdc2016/

Sound Effects - http://ftpmirror.your.org/pub/misc/sonniss/

Sound Effects - http://wiki.laptop.org/go/Free_sound_samples

Audition SFX - https://offers.adobe.com

Music (and graph paper!!) - http://incompetech.com

Text-To-Speech - https://soundoftext.com/

Free Music Archive (great CC music library) - http://freemusicarchive.org/

(tip: you can search CC BY music using filters in Soundcloud or Youtube)

Fonts

Fonts - http://www.fontsquirrel.com

Google Fonts - http://www.google.com/fonts

Fonts - http://www.1001freefonts.com

Fonts - http://www.fontriver.com

Fonts - http://www.1001fonts.com

Da Font - http://dafont.com/FontStruct (Font Maker + Font Library) - https://fontstruct.com/

Public Domain

New York Public Library - http://digitalcollections.nypl.org/
NASA Audio Library -
https://archive.org/details/nasaaudiocollection

Board Games

Board game tools - http://www.rptools.net/

Software for developing card games: http://www.cgjennings.ca/eons/index.html

Miscellaneous

Unity tools

Unity Playground - Framework to build 2D physics-driven games in Unity - https://unity3d.com/learn/tutorials/s/unity-playground

Fungus - Package which is great for building narrative in Unity - http://fungusgames.com/ 

InkleWriter (tool for narrative-driven games, has Unity plugin) - https://www.inklestudios.com/inklewriter/game-developers/

ProBuilder (BSP style level editing tools) - http://www.procore3d.com/probuilder/

Procedural terrain tool for Unity - http://code.google.com/p/unityterraintoolkit/downloads/list

DoTween - dotween.demigiant.com/index.php

TouchScript (multitouch/gesture/TUIO library) - https://github.com/TouchScript/TouchScript

Fabric (Interactive audio engine, free for one game/year) - http://www.tazman-audio.co.uk/

Playmaker (Visual Programing) - https://www.hutonggames.com/

Bolt (Visual Programing) - https://ludiq.io/bolt

Unity Raw Mocap Data Asset - http://u3d.as/3Bt

Other

PixelProspector (gamedev big lists)

ScreenToGif (screen,webcam and sketchboard with integrated editor, optimized GIFs)

GIFCam (free recorder that outputs optimized GIFs)

Peek (Linux gif screen recorder)

EZGif (online GIF animation editor and maker)

JSFiddle (collaborative tool for web projects)

Github Gists (collection of useful scripts)

OBS (cross-platform streaming/screen capture)