The qpasswd tools are a collection of various tools (checkpasswd, checkqpasswd, multicheckpw, and others). They are meant for use with checkpassword-compatible authentication programs like qmail-popup and qmail-smtpd. Currently, the following auth mechanism are supported: plain, login, apop, cram-md5, cram-sha1, cram-ripemd, and digest-md5. No special libraries are required, and it compiles against dietlibc.
Squidwall is a small and very fast squid redirector. It enables the administrator to build an easy-to-use Web interface for controlling user-, host-, or IP-based access to squid. It also supports filtering of Web pages containing obscene content with an advanced phrase weighting system like Dansguardian. It supports pass-through antivirus scanning with clamav, banner filtering, whitelisting and blacklisting via regular expressions or string comparison based on URLs and/or content. The default Web interface can be used by teachers for disabling, enabling, or filtering access to the Internet.