Google's video chat service, Google Duo, is now available to web users in the US because it used to be limited to iOS, Android, and Chromebook devices.
To use Google Duo in your web browser, just go to duo.google.com. If you already have an account and are signed in, you should see a box with your contacts.
New users must sign in and check their mobile phone number before they can access the video chat service.
There is currently no information about when this feature will be available to non-US users. For example, if you are in the UK, you will be taken to the Google Duo website to go to the mobile app landing page.
Set FaceTime aside
Having started testing a group video call feature recently, it looks like Google is cranking up the competition against Apple's FaceTime, disappointed by the restriction to group chat members; Google Duo allows up to seven users per chat, which is pale compared to FaceTime's 32 users per chat.
As the feature is still in the testing phase, this could change before it's available to the public, so we could have big group chats in Google Duo.