200+ free tools that run entirely in your browser. No ads, no signups, no data collection. Includes an AI assistant that helps you find and chain tools together — just describe what you need. Highlights: Audio Stem Splitter, Quantum Circuit Simulator, PDF tools, 40+ image tools, developer utilities, AI subtitle generator. Built with Next.js, WebAssembly, and on-device ML models. Your data never leaves your device.
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Hunter
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Thanks for checking out Kitmul! I started this project because I was tired of the "free tool" sites that are actually ad farms in disguise.
Every tool runs in your browser — your files, your data, your device. Nothing gets uploaded anywhere.
I'm especially proud of the AI-powered tools (stem splitter, background remover, subtitle generator) which all run client-side using WebAssembly and on-device ML models.
Would love to hear: what online tool do you use most often that you wish was faster/more private? That'll help me prioritize what to build next.