Major libraries for PEFT:
- Hugging Face PEFT: Most popular, broad method support
- Unsloth: Optimized LoRA/QLoRA, fast
- LLaMA-Factory: All-in-one training with PEFT support
- Axolotl: Configuration-driven fine-tuning
These libraries handle implementation details. You configure hyperparameters and data. The library manages the PEFT mechanics.