# onUI vs OpenFang — Fit & Features

Canonical: https://trutool.co/compare/onui-vs-openfang
Author: Snehil (https://trutool.co/authors/snehil)

Compare onUI and OpenFang by use case, features, limitations, and evaluation questions.

## Compare fit, features, and limitations

### onUI
Annotate/Draw any web UI for AI agents and export structured context, no app code changes required.
Best fit: People and teams evaluating ai agents for a specific workflow.
- Core product workflow
Before you choose: Test a representative task, inspect outputs, and confirm integrations, permissions, data handling, licensing, and current costs.
Pricing: https://github.com/pricing
- [Read onUI profile](https://trutool.co/tools/onui): Read onUI profile

### OpenFang
Open-source Agent Operating System.
Best fit: People and teams evaluating ai agents for a specific workflow.
- Core product workflow
Before you choose: Test a representative task, inspect outputs, and confirm integrations, permissions, data handling, licensing, and current costs.
Pricing: https://github.com/pricing
- [Read OpenFang profile](https://trutool.co/tools/openfang): Read OpenFang profile