OmniAuth strategy for 37signals.

OmniAuth Oauth2 strategy for Instructure Canvas.

Use the Amazon Cognito IdP with OmniAuth

OmniAuth Strategy for Constant Contact using OAuth2

Official OmniAuth strategy for Digitalocean

OmniAuth OAuth2 strategy for Douban.

Unofficial ESIA OAuth2 Strategy for OmniAuth.

Eventbrite OAuth2 strategy for 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

OmniAuth strategy for Naver(https://developers.naver.com)

omniauth provider for new Office365 API

Enables third-party client apps to connect to the ORCID API and access/update protected profile data

A PayPal OAuth2 strategy for OmniAuth

OmniAuth strategy for the Put.io v2 API

OmniAuth strategy for RunKeeper

Square OAuth strategy for OmniAuth