The stack

Tools that survived an experiment.

Nothing gets listed because a sponsor asked. A tool appears here after it earned its place in a published experiment — with a link to the experiment that proved it. Some links are affiliate links: they fund the lab at no cost to you, and they never change a verdict.

ToolUsed forVerdict from the experiment
Claude Building automations, writing, analysis — the lab's core model Proven in Experiment 001 · [link when published]
ChatGPT Personal-finance workflows, quick research Testing now · [Experiment 003]
More rows appear as experiments publish. If it's not here, I haven't tested it yet — that's the point.

Want the full stack with prompts and workflows included? That's the free Lab Notebook.