Kitset serves 423 PHP-rendered browser tools with honest offline and privacy boundaries

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Kitset is a PHP-rendered directory offering 423 small browser-based utilities, where the server handles routing, metadata, and page structure while the client executes the actual tool logic using browser APIs. The architecture deliberately avoids sending user inputs over the network whenever the task can be completed locally, though each tool is reviewed individually rather than following a blanket rule. The service worker precaches only a core shell — not all 423 tool pages — meaning offline access is limited to previously visited routes rather than the full catalog. User preferences and recent tools are stored in localStorage, with the UI treating saved state as optional and relying on copy or download as the primary data handoff. The project's central argument is that 'browser-first' requires honest, per-tool decisions about what runs locally, what crosses the network, and what offline support actually covers.

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