Simon Willison's Tools
Hundreds of small HTML+JavaScript tools, almost entirely generated with LLMs
About
tools.simonwillison.net hosts a large collection of single-page HTML and JavaScript utilities (converters, viewers, calculators, LLM helpers) that Simon Willison builds through prompt-driven development, mostly with Claude, as a deliberately low-stakes experiment; the source is Apache-2.0 on GitHub with 1.9k stars and 1,300+ commits. The repository describes them as almost entirely generated using LLMs.
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