FrugalSloth trains small neural nets directly in your browser using WebGL/WebAssembly. Fully private FrugalSloth is a browser-based tool that trains small neural networks locally using WebGL and WebAssembly, ensuring full privacy since data and model weights never leave the user's machine. It requires no installation, offers a one-click demo, and allows users to export trained models to the ONNX format. Tired of uploading datasets to someone else's GPU? FrugalSloth trains small neural nets directly in your browser using WebGL/WebAssembly. Fully private — weights never leave your machine. Export to ONNX when you're done. One-click demo included, zero install required.