NxFilter is a free DNS filter for commercial and non-commercial purposes. It's light, fast and easy. You can use it for any environment including companies, schools, hospitals, churches, libraries, etc.
O2Mania - Best O2jam emulator that you can play without internet. Reminisce while playing your favorite songs: V3, Milk Chocolate, Canon and many more!
The Enigma Machine was one of the centerpoints of World War II, and its cryptanalysis was one of the stepping stones from breaking codes as an art to cryptography as a science. The machine encrypted messages sent between parts of the German army operators would type a key on its keyboard, the machine would scramble that, and a letter would light up on the top. This notebook simulates an Enigma Machine and visualizes how it works. The Enigma Machine is an especially neat thing to visualize because it was e
Online String Tools - Simple, free and easy to use string utilities
World's simplest collection of useful string utilities. Hundreds of tools for encoding, decoding, converting, filtering, replacing, generating strings, and much more.