Ghidra is a software reverse engineering (SRE) framework created and maintained by the National Security Agency Research Directorate. This framework includes a suite of full-featured, high-end software analysis tools that enable users to analyze compiled code on a variety of...
A disassembler and decompiler with robust support for various processors and file formats, offering pseudocode similar to original source code.
Aseprite (previously ASE, aka Allegro Sprite Editor) is a program to create animated sprites & pixel art. Sprites are little images that can be used in your website or in a video game. You can draw characters with movement, intros, textures, patterns, backgrounds, logos...
Pixelorama is a free and open source sprite editor, ideal for pixel art. In this page you'll be learning about the latest added features, as well as its features in general. It's made with 
Godot Engine, using GDScript.
Has both Offline(On Itch.io) and Online versions
Generate, refine, and animate pixel sprites in minutes. pixie.haus combines AI with a pixel-art-specific workflow to drastically speed up asset creation.
Bintracker is an advanced, cross-platform chiptune music editor. Bintracker supports many different sound routines on a wide range of 8-bit and 16-bit systems as it uses 
Mame as an emulation backend. So you can compose for SID, AY, FM, Beeper..
FamiStudio is very simple music editor for the Nintendo Entertainment System or Famicom. It is designed to be easier to use than FamiTracker, but its feature set is also much more limited. It is targeted at both chiptune artists and NES homebrewers.
FamiTracker is a free windows tracker for producing music for the NES/Famicom-systems. The interface is based on MadTracker and should be easy to use if you've been using trackers before.
LDtk (Level Designer Toolkit) is a modern and open-source 2D level editor, specifically designed for indie devs.
Tiled is a general purpose tile map editor. It's built to be easy to use, yet flexible enough to work with varying game engines, whether your game is an RPG, platformer or Breakout clone. Tiled is free software and written in C++, using the Qt application framework.
OGMO Editor is a free, open source, project oriented level editor made for indie game developers by indie game developers. Beyond using Tile Layers to create levels from a tileset, use Decal Layers to freely place, scale, and rotate images to decorate your level, Entity Layers...
Pyxel Edit is a pixel art drawing application especially designed for working with tiles. Place tiles to form a level, edit them directly to see how they all work together, then export your tileset and the level data, and load it into your game.
A quick and easy to use drag and drop retro game creator for your favourite handheld video game system.
SameBoy is a user friendly, powerful and open source Game Boy, Game Boy Color and Super Game Boy emulator for macOS, Windows and Unix-like platforms. SameBoy is extremely accurate and includes a wide range of both powerful debugging features and user-facing features, making it...
Nestopia is a NES emulator that was written in C++ and it is perfect for games requiring precise timing since it is very cycle-accurate. With support for an incredible amount of mappers. It also supports NSFs, the famicom disk system, save states, IPS patching, battery-saved...
