
An ad- and tracker-free search engine launched in the UK, France and Germany.
Neeva has 600,000 users in the US, where it launched last year.
Creator Sridhar Ramaswamy, former head of advertising at Google for 16 years, told BBC News that the tech sector had become "exploitative" of people's data, which he did not support.
Trackers share information about online activity, primarily to deliver advertising.
Neeva has raised $77.5 million from investors.
The new engine offers free-to-use search, with other features such as password manager access and a virtual private network (VPN) service to be made available on a subscription basis.
Users are required to create an account to create subscriptions at a later date.
Subscription prices are around $5.
"We think that traditional search engines have become about advertising and advertisers rather than serving users," he said.
"Google has a dominant position in the market - and the incentive for them to really innovate, to really create pleasant, useful experiences for users is not there," he added.
"And then as a company they feel compelled to show more and more revenue and profits to their shareholders, so they just keep increasing the number of ads," Ramasëamy says.