Open Systems Management
Password synchronization and role based access control across UNIX, Windows NT and resident applications. Site contains FAQs.
http://www.osmcorp.com/

Secure Remote Passwords
Software integrates into existing networked applications. Secure telnet and FTP available. Open source. User and technical documentation as well as source code.
http://srp.stanford.edu/

Unisys
Makers of several related products. Includes rationale as well as usage information.
http://www.unisys.com/

RSA Security
Products include token-based one time password systems and single sign on systems. Site contains information on security.
http://www.rsasecurity.com/

Theory of Identification and Authentication
History and development of mechanisms and techniques.
http://www.geocities.com/SiliconValley/Garage/3323/cspage.html

Vasco
Makers of both software and hardware systems. Demos, case studies and product information.
http://www.vasco.com/

SecureUser.net
Providers of tools to e-commerce developers. Technology explanation and case studies.
http://www.secureuser.net/

IIS User Authentication Tutorial
Information on various methods for WWW password protection using Internet Information Server (IIS). Text-based tutorial with some screenshots.
http://www.authenticationtutorial.com/

iisPROTECT
Functions with Internet Information Server to secure web sites. Includes live demo.
http://www.iisprotect.com/

Flicks Software
Software password protects web content (Windows NT / 2000). Free trial downloads available.
http://www.flicks.com

Remote User Authentication in Libraries
A collection of resources for libraries and universities. Includes links to software and some links of interest to non-librarians.
http://library.smc.edu/rpa.htm

I/O Software
Provider of software solutions, including biometric solutions. Product descriptions and technology licensing terms.
http://www.iosoftware.com/

A Proactive Password Checker
Paper by M. Bishop, 1991. The author describes a technique, and a mechanism, to allow users to select passwords which to them are easy to remember but to others would be very difficult to guess. [Postscript]
http://seclab.cs.ucdavis.edu/papers/mb91c.ps

Password Management
Paper by M. Bishop, 1991. Discusses problems of password selection and password management, and identifies relevant techniques.
http://seclab.cs.ucdavis.edu/papers/pdfs/mb-91.pdf

Dos and Don'ts of Client Authentication on the Web
Paper by Kevin Fu, Emil Sit, Kendra Smith, and Nick Feamster. In the Proceedings of the 10th USENIX Security Symposium, Washington, D.C., August 2001.
http://www.pdos.lcs.mit.edu/papers/webauth:sec10.pdf

M-Tech Information Technology, Inc.
ID-Synch, identity management software for managing user administration processes. Product information, customers, press releases and contact details.
http://mtechit.com/

NMA, Inc.
ZSentry two-factor authentication solution. Product information, white papers and contact details.
http://www.nma.com/

Finally Software
Enterprise security solutions based on PKI and Kerberos. Also offer a secure terminal emulator for connecting to Unix servers from Windows. Product information and downloadable evaluation software.
http://www.finallysoftware.com/

Intertrust Technologies Corporation
Develops general purpose digital rights management platform which serves as foundation for providers of digital information, technology and commerce services to participate in a global system for digital commerce. (Nasdaq: ITRU).
http://www.intertrust.com/

Pluggable Authentication Modules
Sun's official PAM documentation. Programmer documentation and source code.
http://www.sun.com/software/solaris/pam/

SAFLINK
Offer a range of identity management solutions based on tokens, smartcards and biometrics. Headquarters in Bellevue, WA.
http://www.saflink.com/

Proginet Enterprise Software
Password synchronization, enterprise-wide access control management and managed file transfer software.
http://www.proginet.com/