Callisto

Callisto is a powerful asset manager designed specifically for game developers working with pixel art and sprite-based projects. It provides an intuitive interface to browse, organize, and manage large libraries of visual assets with ease.

 Its core strength lies in fast, intuitive grouping and previewing of large numbers of visual assets — helping you stay organized without slowing down your creative process.

Key features:

• Visual grouping: Organize assets into logical groups to keep your workspace tidy.

• Instant preview: View sprites, sprite sheets, and asset groups with minimal loading times.

• Tagging system: Assign and search custom tags to easily filter your asset library.

• Sprite sheet support: Browse sprite sheets frame-by-frame with pixel-perfect rendering.

• ZIP archive browsing: Open ZIP files and view their contents without extraction.

At the core of Callisto's structure are bundles—top-level containers that can hold individual assets or grouped asset sets. Each bundle can feature a custom preview image and title, helping you visually navigate your library at a glance.

Callisto makes organizing your assets fast and effortless. Simply drag and drop one asset onto another to instantly create a group. To add more assets, just drag them onto the group.

Need more control? Use the context menu to quickly:

• Group selected assets

• Ungroup items

• Merge existing groups

This streamlined workflow helps you keep even the largest asset libraries clean, logical, and ready for production.

Drag and drop to group assets

Use context menu to group assets

Merge groups into one

Slice sprite sheets for preview

Slice multiple sprite sheets at once

Drag assets directly to other apps

Ctrl + Drag groups directly to other apps

Manage large libraries with ease

Manage 3D assets