Digits

Credit Card Number Validator is a free utility to help you check validity of a credit card number. Credit Cre validates credit card numbers right on your PC without going on-line or transmitting sensitive information from your PC.

Human Pictcha is a protection in a form of an image (a captcha), which can be embedded inside your web forms, and which will filter out various forum spam, guestbook spam, form spam, signup spam, password attacks. For PHP and Perl.

Sudoku Express game is an incredible puzzle entertainment, train your brain. Also it is a unique 3D game. You solve the puzzle with reasoning and logic, depending on your skill and experience. Sudoku Express is fun, challenging, and addictive

Enter any number up to twenty digits, and click the button. The result will be a string of unique prime numbers that can evenly be divided into the number that was entered.

File encryption/decryption tools with strongest AES(Rijndael) algorithms. Can generate the hash of the source file as password for symmetric encryption. Encryption strength AES Rijndael: 256 bit / Hash: SHA-256

PalmaryCalc from a simple to a scientific calculator with different input methods, conversion functions, credit, base number conversions, integer math calculations , logical and bit-manipulation operations, currency conversion

Get ready for an exciting virtual journey inside the strange world of your microprocessor where endless strings of digits make things happen, things like the internet, the virtual reality, the artificial intelligence and everything else.

Try memorize digits and improve memory. Try to memorize the digits chain and improve your memory.

A free game with lots of different Sudoku puzzles to solve. The aim of sudoku is to enter the digits from 1 to 9 in a grid with 81 cells without repeating them in rows, columns and regions. A simple game - but unbelievable addictive!