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AI ToolkitFluxGym
Free

Free and open source.

 Free

Free to download and run, with source on GitHub.

Self-hosted, Command line Windows, Linux
  • Trains LoRAs and fine-tunes diffusion models
  • Web UI as well as config-file workflows
  • Simple interface for LoRA training
  • Works on GPUs with low VRAM
  • Training needs a powerful GPU with plenty of memory
  • Aimed at users comfortable with model training concepts
  • Focused on FLUX LoRAs only
  • Fewer options than full training tools
Downloadable app, Self-hosted Downloadable app
Open source Closed source
License: MIT License not stated
No account needed No account needed
Works offline Works offline

Checked October 1, 2026

Checked September 26, 2026

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