auth2x is a Perl module for performing 2-factor authentication. auth2x has a user authenticate with a passphrase initially. If that authenticates, the module sends a 10 character hex code to a pre-configured (per authentication user-basis) email address. The user then authenticates a second time with their passphrase concatenated with the 10 character code.
Authen::Simple::WebForm is a Perl library for simple authentication against existing Web based forms using the Authen::Simple framework. This wraps up the LWP (libwww-perl) calls needed to attempt a login to a site that uses an HTML form for logins. It supports logins that require cookies, various form variables, special headers, multi-stage logins, and more.
oauth-php is a PHP library for OAuth consumers and servers. It has an extensible OAuth store, including a full working implementation of a MySQL store. The library implements methods to: verify incoming requests against the library; to sign outgoing requests, with curl support for actually doing the request; to sign requests with a body; to administrate consumer keys and tokens for multiple users (server and consumer side); and to log incoming and outgoing requests handled by the library (optionally in the database).
Multi-OTP is a PHP class that can be used to authenticate and manage OTP user tokens for strong two-factor authentication. It can create, update, and delete tokens to authenticate users with one time passwords (OTP). The users' data are stored in files. The class can also check the user token using several algorithms: Mobile OTP (MOTP), OATH/HOTP (RFC 4226), and OATH/TOTP HOTP Time Based (RFC 4226 extension). It works with compatible software tokens (iPhone, Android, PalmOS, Nokia, and other Java J2ME capable phones) and hardware tokens (such as Feitian, ZyXEL, Authenex, or Seamoon). The multiotp command line utility is also provided, both in "compiled" form (for Windows) and in source code (for Linux or educational purpose). The multiotp command line can be combined with FreeRADIUS (under Linux) or the free TekRADIUS LT (under Windows) in order to have a powerful radius strong authentication server.
pysrp is a Python module that provides an implementation of the Secure Remote Password protocol (SRP), a cryptographically strong authentication protocol for password-based, mutual authentication over an insecure network connection. Unlike other common challenge-response autentication protocols, such as Kerberos and SSL, SRP does not rely on an external infrastructure of trusted key servers or certificate management. Instead, SRP server applications use verification keys derived from each user's password to determine the authenticity of a network connection.