The software will benefit London's 2,600 maintained schools

The software monitors computer activity on the internet, instant messaging, e-mail and other applications for inappropriate behaviour.

If improper activity is detected, the programme stores details of the offending material for review.

London Grid for Learning's (LGfL) e-safety software will benefit London's 2,600 maintained schools.

More than a third of 12 to 15-year-olds have faced some kind of cyber bullying, according to a government study.

"This software enables all computer related activity to be tracked," said Brian Durrant, of LGfL.

He said it will encourage pupils to follow schools' guidelines on acceptable use of IT

"Ultimately, it enables better protection of pupils from cyber-bullying and other inappropriate on-line activities," he said.