Twitter now lets you sign up and log in with Apple or Google accounts0
Apart from being able to create a Twitter account using Apple or Google accounts, you can also sign into Twitter accounts using either of the two. If you link your Apple or Google account with an existing Twitter account, you’ll be able to log in on the fly and use the app. In order to do that, the email for both Apple/Google and Twitter accounts must be the same.
Currently, the new feature works with Google on iOS, Android and Web, but those who wish to sign in with their Apple accounts will only be able to do so on iOS. According to Twitter, support for this feature will come to its Mac desktop app in the future.