168 free browser tools — no signup, no uploads, no tracking. Every tool runs 100% client-side in JavaScript. Your data never leaves your device. AI tools (summarizer, sentiment, email writer), developer tools (JSON, regex, JWT), design (color picker, gradients), security (passwords, hashing), business (invoices, ROI), student tools (GPA, citations), women's health (cycle tracker), senior tools (medication reminder, emergency card), and more. Opens in <1s. Works on mobile.