Apple is reportedly preparing to open the App Store to non-WebKit iOS browsers and Mozilla and Google are wasting no time in preparing their alternatives.

App Store rules currently forbid any third-party browser from using an engine other than Apple’s own WebKit. Regulators are gearing up to force Apple to change the rule because it’s seen as anti-competitive.

When they arrive later this year, iOS 17 and iPadOS 17 are expected to be small releases when it comes to...