wwwhisper is a privacy-friendly system which simplifies sharing Web resources which are not intended for everyone. It allows you to specify which HTTP resources can be accessed by owners of which email addresses. Mozilla Persona is used to prove that a visitor owns an allowed email address. No site-specific password is needed. The Persona UI makes the authentication process really smooth. wwwhisper is application-independent and can be used for any Web resources.
sec-wall is a feature-packed security proxy that supports SSL/TLS, WS-Security, HTTP Auth Basic/Digest, extensible authentication schemes based on custom HTTP headers and XPath expressions, powerful URL matching/rewriting, and an optional header enrichment. It's a security wall with which you can conveniently fence otherwise defenseless backend servers.