Kivtools

A collection of developer tools bundled into a single progressive web application. Instead of hunting for separate single-purpose sites, developers can access multiple utilities from one installable app. Aimed at programmers who want common everyday tooling gathered in one browser-based workspace.

Astronomical Sun Clock showing true local solar time, the Sun, Moon, planets and brightest stars. See sunrise, sunset, day length and seasonal rhythms at a glance. Explore past and future skies. Free, ad-free and privacy-friendly. Installs to your home screen from any modern browser — no app store, no download; its manifest declares standalone display with a 512px icon, and its service worker caches assets for offline use. Submitted by its author and measured on 2026-08-11.

Visualize JSON data as an interactive graph. Paste any JSON and instantly see the structure as nodes and edges. Essential for understanding complex nested API responses.

Convert between web formats — JSON to TypeScript, HTML to JSX, CSS to Tailwind, SVG to React component, and 30+ other transformations. Indispensable for frontend developers.

Open-source grammar and style checker for 20+ languages. The privacy-respecting Grammarly alternative with a browser extension and web app. Your text isn't used for AI training.

PureHub offers a collection of 25 free, ad-free, and privacy-first mini apps. These apps are designed for various daily utilities and productivity tasks, accessible directly from your browser. It provides tools such as QR code management, a focus timer, and a breathing guide.