rTexPacker

A simple and easy-to-use textures packer and font atlas generator

Sprite Hax

Gain unparalleled control over your messy spritesheets

GAP : Generic Atlas Packer

gap

Atlas Tile Wrapper

Shader that wraps tiles in Atlas texture (Blender and Godot)

TextureAtlasComposer

Utility for creating and editing texture atlases

Texture Packer

Pack several images into a spritesheet within your browser and download the spritesheet and JSON data file.

Sprite Sheet Buddy

A tool to create sprite atlases for game frameworks.

Sprite Atlas for GameMaker

Combine sprites into single atlases!

Godot Item Icon Atlas Builder – Export Ready-To-Use Inventory Atlases

GlyphForge Bitmap Font Studio

Create bitmap font atlases with PNG, JSON, CSS, and BMFont XML export.

Sprat: Advanced Sprite Atlas Generation for Game Makers

Can your sprites into atlases

DreamAtlas

Flexible, balanced, artistic map generation for Dominions 6