PassphraseForge

A zero-server-transmission security tool that runs entirely in your browser to assess password risk, detect reused passwords in your notes, generate strong passwords, and create shareable diagnostic cards for social media.

A free browser tool that lets you check up to 10 hops of redirects, the final URL, a quick safety score, and an OGP preview before clicking a shortened or suspicious link.

A free browser game that trains you to instantly tell real messages from scams across email, SMS, and LINE-style chats. Red-flag explanations, a collection guide, and rankings make it fun to build judgment skills you can use in real life.

A free tool that instantly converts everyday remarks and rough drafts into 25 types of writing formats — business emails, requests to your boss, polite refusals, casual LINE-style messages, regional dialects, haiku, press releases, and more — with no external API. Copying, sharing to X, side-by-side comparison, favorites, history, and daily prompts all work right in your browser.

A refreshing cleaning game where you trace with your finger or mouse to wipe away foggy windows, mirror water stains, bathtub mold, stovetop grease, and floor dust. Along with 30 stages, a 60-second time attack, endless mode, and MySQL rankings, it includes a practical dashboard that records your home cleaning frequency in LocalStorage with color-coded display, plus a 50-entry cleaning trivia encyclopedia.