Single-purpose web tools — calculators, converters, generators. Useful first, and occasionally beautiful too.
5 sites in the drawer
ExpiredFeed tracks deleted, pending-delete and newly registered domains across 1,344 TLDs, for domain investors and SEOs. The 0–100 history score beside each name is the site's own heuristic, labelled as such rather than passed off as an Ahrefs or Moz number.
TallyChef is a set of free calculators for costing recipes, pricing menus and splitting tips, built for independent restaurant operators. Every tool runs in the browser with no account, on the site's own reasoning that none of this math is secret.
BBQ Math is a set of calculators for anyone cooking barbecue for a crowd — how much brisket to buy for 25, and when to light the smoker. Its anonymous author disclaims any restaurant or competition résumé, and flags the raw-to-cooked yield factors as the number most worth arguing about.
BirdBench is a small set of free browser tools for North American birders — hummingbird nectar ratios, nest box dimensions, a life list that stays on the device. Its Quiet Hotspots tool inverts the rare-bird alert, surfacing eBird locations nobody has filed a checklist from in weeks.
TubeToolbelt is a set of fifteen free browser-based utilities for YouTube creators — grabbing thumbnails, scoring titles, tracking watch hours toward monetization. An independent project that runs most of the work in the browser and gates nothing behind an account, a watermark or a paid export.
