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AI ToolkitOneTrainer
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
  • Covers several training methods in one tool
  • Includes training presets and example configs
  • Training needs a powerful GPU with plenty of memory
  • Aimed at users comfortable with model training concepts
  • Needs a capable GPU
  • Training settings take time to learn
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.