Lemonldap::NG 是一个模块化的 Web 单点登录系统，基于 Apache::Session 模块。它简化了构建应用程序的保护区域。可管理认证和授权，可实现完全的 AAA 保护。LemonLDAP::NG 是在 Lemonldap 基础上完全重新，tar包中包含所需的所有组件，不过为 Lemonldap 开发的模块将无法在 LemonLDAP::NG 上使用。
LemonLDAP::NG is an open source Web Single Sign On product (WebSSO) written in Perl, plugged into Apache Web Server.
LemonLDAP::NG is a free software, released under GPL license.
LemonLDAP::NG is the first SSO software deployed in French administrations. It can handle more than 200 000 users. Many private firms use it too.
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特点：
Single Sign On for Web Applications
·Many SSO-ready applications (OBM, Bugzilla, Dokuwiki, etc.)
·Special Handlers for Zimbra, Sympa
·Tomcat SSO Valve
·Replace all .htaccess based security
·Forward SSO trough HTTP Auth-Basic or form replay
·One line code to integrate in Java, PHP, .Net, Perl, Ruby, Python, …