Using OAuth2 to authenticate wechat user when web resources being viewed within wechat(weixin) client.

OmniAuth strategy for Instagram.

OmniAuth strategy for Line

Vkontakte OAuth2 Strategy for OmniAuth

Unofficial OmniAuth OAuth2 strategy for Okta

Discord OAuth2 Strategy for OmniAuth

Assertion grant extension for Doorkeeper.

omniauth provider for new Microsoft Graph API

Stripe Connect OAuth2 Strategy for OmniAuth 1.0.

OmniAuth Oauth2 strategy for weibo.com.

Official OmniAuth strategy for Asana.

OAuth 2 authentication with the Entra ID API.

Omniauth strategy for Keycloak

OmniAuth provider for Microsoft Office365

OmniAuth strategy for Slack

OmniAuth strategy for clever.com SSO OAuth2 integration

OmniAuth OAuth2 strategy for Fitbit

OmniAuth strategy for Hubspot (borrowed heavily from @kmrshntr)

OmniAuth strategy for Smartsheet

Login with Amazon OAuth2 strategy for OmniAuth 1.0