With FIDO2

Here is a non-exhaustive (non-binding) list of services and applications compliant with the FIDO2 standard.

Backup

Boxcryptor
OneDrive

Cloud

Amazon Web Services
Microsoft Azure Active Directory

Collaboration/Office

Basecamp
Google docs
Hangouts
Nulab
Office 365
SeguLink
Skype

Content Creation

Shopify
silverstripe
YouTube

Crypto Assets

Brave
DSX
Gemini
Stex

Development

Github
Jira (2FA for JIRA)

Password Management

1Password

Identity Management (SSO/IAM)

Avatier
Daon
Data Guard
Egnyte Protect
Entrust Identity as a Service
ForgeRock
Green Rocket
Hanko Identity
HelloID
InfoAnywhere
Okta
OneLogin
PingIdentity
PrivacyIDEA
RSA SecurID Access
Sign&Go SSO (Ilex)
Thycotic
TRUU
XTN Cognitive Security

Hosting

GoDaddy
IPS Hosting
Opalstack

IT Security

AppGate
Cloudflare
XONA

Social networks

Twitter
YouTube

Operating Systems

Microsoft Edge Browser

Webmail

Gmail
Hey
Outlook