Rumkin Playfair Cipher

Runs a set of checks on a URL, such as DNS, SSL, headers, ports and tech stack, and shows the results.

Demo of the open-source FingerprintJS library that computes a visitor ID from browser attributes.

Drag-and-drop recipe builder that chains hundreds of operations for encoding, encryption, compression and data analysis.

Zero-knowledge pastebin where text is encrypted in the browser before being stored, with expiry options.

Builds scripts that harden privacy and security settings on Windows, macOS and Linux, chosen by checkbox.

Shares passwords through links that expire after a set number of views or days.