Open-source alternatives to Unity Texture Packer

MyPaint is a simple drawing and painting program that works well with Wacom-style graphics tablets.

QOI is a lossless image codec and encoding standard designed for high-speed compression and decompression of raw pixel data. It provides a toolkit for translating raw image buffers into a compact format and back into pixel representations without any loss of quality. The implementation focuses on fast image encoding and decoding, enabling the rapid conversion of compressed image data back into raw pixels. It also supports image format conversion to ensure compatibility across different software systems and hardware.

Upscayl is a cross-platform desktop application designed to increase the resolution and visual quality of digital images using artificial intelligence. By executing all processing tasks locally on the user's machine, the software ensures that sensitive media files remain private and never leave the host system for cloud-based services. The application distinguishes itself through a hardware-agnostic architecture that offloads intensive rendering workloads directly to the local graphics unit. It utilizes a hardware abstraction layer to translate enhancement commands into instructions compatibl