Three More Network Tools — and the Subnet Calculator Comes Home
The Network Tools section went live with four tools yesterday. Today it’s eight — plus a homecoming. Here’s what’s new: Email Auth Lookup SPF,…
read →// Category: Behind the Build
Network Tools Are Live: Real Lookups, No Backend
I lost count of how many times I’ve Googled “dns lookup” and landed on a page with three popup ads, a cookie banner, and…
read →Thirty-Three Tools, Eight Easter Eggs, One Long Night
Yesterday’s twenty-two tools were the warm-up. Today the site got rebuilt top to bottom — new dark theme with the neon green I’ve been…
read →The Original Twenty-Two: Why I Built a Tools Site
Every one of these tools existed for a while before this site did — scattered across bookmarks, old project folders, and the kind of…
read →Welcome to Gizmo 421
Welcome to gizmo421.info — a home for small, free, no-nonsense web tools. The idea is simple: a collection of calculators, generators, and utilities that…
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