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A free, privacy-first habit collapse predictor. Track multiple habits, calculate collapse risk, measure volatility, and predict exactly when your streak will break — 100% client-side, no sign-up required.

A free, minimalist focus timer built for habit formation. Preset durations, a beautiful visual progress circle, sound alerts, keyboard shortcuts, and zero tracking — all in your browser.

PureDiff is a zero-upload file comparison tool. Paste text or upload files to get instant line-by-line diffs—side-by-side or inline—without sending a single byte to a server.

Take pixel-perfect screenshots every time. ViewPorter opens a controlled browser popup at exact pixel dimensions, with device presets, aspect ratio lock, and resize-on-demand — all in your browser, zero install.

Weekwise renders your lifespan as a grid of weeks—filled for the past, empty for the future. Track milestones, create multiple profiles, and make every week count. 100% free and client-side.

A free, privacy-first multi-criteria decision analysis tool. Define criteria, assign weights, score options, and see ranked results instantly—no sign-up, no servers, 100% client-side.

Check any foreground/background color pair against WCAG 2.1 contrast requirements. See AA and AAA results, a live text preview, and copy CSS—all client-side, free, no signup.

Stop guessing why your emails aren't sending. SMTP Test Tool lets you verify your SMTP server connection, authentication, and delivery with real-time step-by-step diagnostics.

Transform your package.json into an interactive, security-aware tree visualization. Identify vulnerabilities, deprecated packages, and dependency relationships—all in your browser.

A free, privacy-first expense splitting app that works offline. No sign-up, no subscriptions, no data harvesting—just simple expense tracking that stays on your device.

Stop writing schema code by hand. Schema Flow lets you drag tables, draw relationships, and export PostgreSQL, MySQL, SQLite, Prisma, Drizzle & TypeORM schemas — all in your browser.

Stop guessing colors. Extract palettes from images, generate harmonious color schemes using color theory, and export to CSS, Tailwind, Figma, SwiftUI, and more.