waifu2x - Online/Offline tool to upscale images
ESRGAN - ESRGAN is an upscaling method that is capable of generating realistic textures during single image super-resolution.
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...
Anime4K - A High-Quality Real Time Upscaler for Anime Video
Cupscale - Image Upscaling GUI based on ESRGAN
QualityScaler - QualityScaler - image/video deeplearning upscaler app (BSRGAN)