SST Neural Network Designer is a visual tool for designing, saving, and exporting custom neural network architectures. It features a drag-and-drop canvas with layers growing from bottom to top, custom node types with names and icons, click-to-connect edge management, dynamic layer controls, and save/export as JSON. Designs can sync with Supabase when signed in, and the app works offline in guest mode using local storage. Built in collaboration with Ayman Elgharabawy (Ph.D).