OmniAuth strategy for Pinterest.

OmniAuth strategies for TQQ and QQ Connect).

OmniAuth strategy for QQ Connect.

Twitch OAuth2 Strategy for OmniAuth

Twitter OAuth2 strategy for OmniAuth. '2' means OAuth 2.0.

Windows Live, Hotmail, SkyDrive, Windows Live Messenger, and other services... strategy for OmniAuth

OmniAuth strategy for Yandex.ru

OmniAuth strategy for 37signals.

OmniAuth Oauth2 strategy for Instructure Canvas.

Use the Amazon Cognito IdP with OmniAuth

Official OmniAuth strategy for Digitalocean

OmniAuth OAuth2 strategy for Douban.

Unofficial ESIA OAuth2 Strategy for OmniAuth.

Eventbrite OAuth2 strategy for OmniAuth

Integrate with Greenhouse with OmniAuth

OmniAuth strategy for Gumroad, see https://github.com/gumroad/omniauth-gumroad for examples and more information.

instagram Graph OAuth2 Strategy for OmniAuth

OmniAuth strategy for LinkedIn using OpenID.

OmniAuth Strategy for Mastodon

Meetup.com authentication handler for OmniAuth