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UpscaylReal-ESRGAN
Free

Free and open source under the AGPL. There is no paid tier and no per-image cost.

 Free

Free and open source under the BSD-3-Clause license.

Windows, macOS, Linux Windows, macOS, Linux, Command line
  • Runs entirely on your own machine, so no images are uploaded anywhere
  • Batch processing for whole folders
  • Dedicated model variants tuned for anime versus photo content
  • BSD-licensed and widely reused inside other tools and GUIs
  • Needs a Vulkan-compatible GPU; the project warns many integrated chips will not work
  • Slow on weaker hardware, and memory-hungry on large images
  • Core project is a command-line library rather than a polished GUI app
  • No repository update reflected since mid-2024
Downloadable app Downloadable app, Self-hosted
Open source Open source
License: AGPL-3.0 License: BSD-3-Clause
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked September 21, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.