Okta - Enterprise-grade identity management for all your apps, users & devices
1Password - 1Password can create strong, unique passwords for you, remember them, and restore them, all directly in your web browser.
Auth0 - Auth0 is a program for people to get authentication and authorization services for their own business use.
Lastpass - LastPass is an online password manager and form filler that makes web browsing easier and more secure.
OneLogin - On-demand SSO, directory integration, user provisioning and more
KeePass - KeePass is an open source password manager. Passwords can be stored in highly-encrypted databases, which can be unlocked with one master password or key file.