Untools

Untools is a curated library of frameworks that help you think more clearly, especially when you’re stuck on complex problems, messy decisions, or unclear priorities. It collects a wide range of mental models and decision-making tools, each broken down with simple explanations, clean diagrams, and practical use cases. This isn’t theoretical content pulled from a business book. Everything here is meant to be applied directly.

The site covers classic tools like the Eisenhower Matrix, Inversion, Second-Order Thinking, First Principles, and the Iceberg Model. Each one includes a short write-up on how the model works, why it’s useful, and where to apply it. It’s focused, well-edited, and skips the jargon. You also get downloadable templates in Notion or PDF format so you can start using the tools right away without having to recreate them from scratch.

There’s also a newer AI-powered version that adds functionality like decision tracking, prompts, and guided workflows. It’s still evolving, but it adds structure if you’re trying to build a habit of clearer thinking. If you’re the kind of person who likes to step back and frame a problem before diving into execution, Untools is worth saving. It’s one of those quiet resources that helps bring clarity when a project or brief starts to feel chaotic.