SafeToNet has made a business out of safeguarding children from the threat of social media and social network users.

The company uses artificial intelligence to find and block harmful content in real time, and its app helps parents make sure that their children are safe while they surf.

SafeToNet is now also selling licenses to schools.

See more of our 101 tech start-up disrupters here.

And check out our 101 rising stars of tech - the exciting firms which did not make the main list but have the potential to grow.