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Kiln vs H2O LLM Studio: catalog facts
Kiln	H2O LLM Studio
Free The app is free and the accompanying library is open source.	Free Free and open source.
Windows, macOS, Linux	Linux, Self-hosted
Evals, fine-tuning and synthetic data in one app RAG, agents and MCP support	Fine-tune models without writing training code Runs on your own hardware
Licence of the desktop app is not stated in the research Broad scope can be more than a small project needs	Needs a capable GPU for practical training Aimed at people with some machine learning background
Downloadable app	Self-hosted
Closed source	Open source
License not stated	License: Apache-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked October 2, 2026

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