number validator

Find cell phone numbers, email addresses, and lookup international listings.

This utility will interest you if you like to work with prime numbers.

This is malint, an MPEG Audio stream validator.

Bulk web link validator, pagerank, link popularity and traffic rank checker

Displays an integer from decimal number system to octal number system.

Calculate the percentage of any number out of any number.Great little tool.

Calculate the percentage of any number out of any number.Great little tool.

Guessing Game - Using a random number, you have to guess the number.

A large number of playback codec's/filters and a small number of encoding codec

Get a high-quality complex-number math library, covering both cartesian and polar coordinates.