virtual number

Create virtual COM ports connected with virtual null-modem cable, share COM port

Count prime numbers until a specified number or infinity.

Converts number to a string of letters.

Love Number - Lite Numerology Software.

Calculate number of work days between 2 dates

Modify HDD Volume Serial Number

Simple Negative Number Check checks whether a passed argument is negative or not

This is a magic number guessing game.

Guess the number game is a simple game that all ages can play.

This is a fast prime number list generator using sieve algorithm.