Zephyr

Spec sheet

Purpose

Zephyr is a texture packer and sprite editor with animation support for 2D games.Read 30 Sep 2026 · github.com

Security

The repository links a GitHub security policy, but the opened page does not provide security or compliance details.Read 30 Sep 2026 · github.com

Maker

The project credits Christopher Whitley (AristurtleDev) as its copyright holder and Aristurtle as its itch.io author.Read 30 Sep 2026 · aristurtledev.itch.io

Animation

Animations use a frame timeline with per-frame delays and Forward, Reverse, or PingPong playback, and can loop.Read 30 Sep 2026 · github.com

Atlas packing

It offers Shelf and MaxRects packing algorithms, configurable padding, and a maximum texture size, with the atlas updating in real time.Read 30 Sep 2026 · github.com

Downloads

The download page lists Windows, macOS, and Linux archives for version 0.2.1, including Windows and Linux ARM64 builds.Read 30 Sep 2026 · aristurtledev.itch.io

Export

Export writes a packed atlas texture and JSON metadata containing sprite positions, pivot points, hitboxes, and animations.Read 30 Sep 2026 · github.com

Installation

The maker says to extract the platform archive and run the executable, with no installation required.Read 30 Sep 2026 · github.com

Project files

Projects are saved as one .zephyr file, while source images are referenced by paths relative to that file and need to remain alongside it.Read 30 Sep 2026 · github.com

Source license

The source code is licensed under the MIT License; the artwork and mascot are separately reserved by the copyright holder.Read 30 Sep 2026 · github.com

Sprite hitboxes

Sprites can have Rectangle, Circle, or Polygon hitboxes whose shapes and positions are editable with interactive handles.Read 30 Sep 2026 · github.com

Sprite workflow

It organizes sprites in a tree, packs them into an atlas, supports per-sprite pivots and hitboxes, defines animations, and exports a texture with JSON metadata.Read 30 Sep 2026 · github.com

Plans and prices

Every Zephyr plan and price →

Where Specifiction places it

• Test Management Software#41 of 486.7
• Game Animation Software#32 of 326.7