Webtunnel is a network utility that encapsulates arbitrary data in HTTP and transmits it through a Web server. In that regard, it is similar to httptunnel. However, its server component runs in the context of a Web server as a CGI application (with optional FastCGI support), so it does not need its own port. It supports most things that the Web server supports, such as authentication, HTTP 1.1, HTTPS, and client certificates. It uses simple requests and responses so it works seamlessly through forward and reverse proxies.
htmLawed is a PHP script that makes input text more secure, HTML standards-compliant, and suitable in general from the viewpoint of a Web-page administrator, for use in the body of HTML 4 or XHTML 1 or 1.1 documents. It is a customizable HTML/XHTML filter, processor, purifier, and sanitizer. It can ensure that HTML tags are balanced and properly nested tags, neutralize code that may be used for cross-site scripting (XSS) attacks, and limit the allowed HTML elements, tags, attributes, or URL protocols.
Yaacfi is an authentication, authorization, and access control filter for J2EE Web applications. This filter loosely emulates J2EE servlet container role based security with some extensions, and allows to easily implement login procedures for much more complicated user interaction schemes than the standard container-based security form login procedure. These schemas are required to provide cookie login, openid login, explicit login, etc. The filter is completely compatible with Struts.
mod_auth_openid is an authentication module for the Apache 2 Web server. It handles the functions of an OpenID consumer as specified in the OpenID 2.0 specification. Once installed, a simple configuration directive can secure a directory or application on your Web server and require a valid OpenID/XRI identity. You can configure trusted/untrusted identity providers along with a number of other options.
SafeWeb is a personal homepage middleware environment for Apache (including 1.3 and 2.0) on Unix. It provides page hit counting, visitor logging, server-side includes (SSI), safe setuid CGI (with or without suEXEC) by installing appropriate CGIs, and .htaccess for a single user, without the need of becoming root or restarting Apache. SafeWeb is easy to install and easy to use.