The father of the World Wide Web says it has "failed rather than served humanity".
Stung by recent scandals including election hacking and massive privacy breaches, Sir Tim Berners-Lee is taking action to "re-orient the web to its original vision".
"I've always believed the web is for everyone. That's why I and others fight fiercely to protect it," he wrote in a blog post on the weekend.
"But for all the good we've achieved, the web has evolved into an engine of inequity and division, swayed by powerful forces who use it for their own agendas."
He has a vision to create a new, decentralised web, and hopes his new open-source project Solid will give users more control over their data.
"Solid is a platform, built using the existing web. It gives every user a choice about where data is stored, which specific people and groups can access select elements, and which apps you use," he wrote.
"Solid changes the current model, where users have to hand over personal data to digital giants in exchange for perceived value.
"As we've all discovered, this hasn't been in our best interests."