Upscayl - 🆙 Upscayl - Free and Open Source AI Image Upscaler for Linux, MacOS and Windows built with Linux-First philosophy. - GitHub - upscayl/upscayl: 🆙 Upscayl - Free and Open Source AI Image Upscaler for...

ESRGAN - ESRGAN is an upscaling method that is capable of generating realistic textures during single image super-resolution.

MadVR - MadVR uses your GPU to perform resolution upscaling, chroma upscaling, and all kinds of other video rendering enhancements that can significantly improve video quality. It can be used with a few different video players such as MPC-HC and PotPlayer.

Anime4K - A High-Quality Real Time Upscaler for Anime Video

waifu2x - Online/Offline tool to upscale images

RealSR - Real-World Super-Resolution via Kernel Estimation and Noise Injection