- http://www.wiris.com/en
- https://oauth.vk.com/authorize?client_id=3988696&scope=4392196&redirect_uri=https%3A%2F%2Fabitu.net%2Fsimple_api%2Fsocial_auth.php%3Fmethod%3Dvk_auth&display=page&v=5.5&response_type=code
- https://www.facebook.com/v2.8/dialog/oauth?client_id=1286957284698284&redirect_uri=https%3A%2F%2Fabitu.net%2Fsimple_api%2Fsocial_auth.php%3Fmethod%3Dfacebook_auth
- http://mipt.ru/oauth/authorize.php?response_type=code&client_id=Abitu&state=xyz&scope=userinfo%20email&redirect_uri=https%3A%2F%2Fabitu.net%2Fsimple_api%2Fsocial_auth.php%3Fmethod%3Dmipt_auth
- https://oauth.yandex.ru/authorize?response_type=code&client_id=86cfbca84f2e4c69a15de652d12719ee
- https://accounts.google.com/o/oauth2/auth?redirect_uri=http%3A%2F%2Fabitu.net%2Fsimple_api%2Fsocial_auth.php%3Fmethod%3Dgoogle_auth&response_type=code&client_id=89548132046-f642iubag0pmmnu97mrc9nd1ehmq01ic.apps.googleusercontent.com&scope=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fuserinfo.email+https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fuserinfo.profile
- https://connect.mail.ru/oauth/authorize?client_id=722809&response_type=code&redirect_uri=https%3A%2F%2Fabitu.net%2Fsimple_api%2Fsocial_auth.php%3Fmethod%3Dmailru_auth