ZeroKit is a library of 50 free, client-side tools for freelancers, small businesses, and developers, covering everything from invoicing and rate calculators to Kanban boards and a regex tester. Everything runs entirely in your browser. No sign-up, no ads, no tracking, and no server ever sees your data. It's also fully open source. Built solo out of frustration with tools that hide basic functionality behind paywalls or sign-up forms for something that should just work instantly.

I built ZeroKit, a library of 50 free, client-side tools for freelancers and small businesses. No sign-up, no ads, fully open source. It started from a simple annoyance: needing something quick like an invoice generator or a rate calculator, and running into a sign-up wall or an ad-stuffed page before I could actually use it. So I built the opposite: everything runs entirely in your browser. No accounts, no servers processing your data, nothing tracked. It's organized into 5 categories: - Freelance & Client Management (invoices, contracts, proposals, etc.) - Business & Finance (break-even calculator, ROI calculator, etc.) - Productivity & Planning (Kanban board, Pomodoro timer, etc.) - Marketing & Content (hashtag generator, UTM builder, etc.) - Developer & Tech (JSON formatter, regex tester, etc.) It's free and I want to keep it fully open source. Would genuinely appreciate feedback: what's useful, what's missing, what's broken.