| 1 | 1,886 | 9,207 | u2f | Library for handling registration and authentication of U2F devices |
| 2 | 5,719 | 5,185 | castle-rb | Castle protects web and mobile applications from account takeovers,
fake accounts, bots... |
| 3 | 17,873 | 16,810 | userbin | Secure your application with multi-factor authentication, user activity monitoring, and... |
| 4 | 30,673 | 33,953 | devise_castle | Devise extension for Castle. Secure your authentication stack with real-time monitoring... |
| 5 | 31,982 | 30,997 | devise_userbin | Devise extension for Userbin. Secure your application with multi-factor authentication,... |