number validator

HTML/XHTML markup validator.

XML and XHTML checker.

Helps kids to practice problems in addition und subtraction.

Build Creative Equations While Practicing Math Facts

Open source web conformance tool.

Find prime numbers.

Convert a number from any base, or express a number in words.

Find the number of string occurrences within a large text.

Automator action adds sequence number to files.

Adds a number of video codecs to QuickTime-based applications.