Mail Archive Archiving service for public mailing lists .
Jakarta Mailing Lists For the various Java-related projects at Apache, includes subscription form and archives.
Redhat Linux Mailing list manager Focuses on Linux and Redhat related security information specifically the Linux-security and Redhat-watch-list lists .
SQL.org.uk Several specific mailing lists for DBAs, developers and on Oracle on Unix and NT.
Why is Bottom-posting better than Top-posting? Short lesson by A. Smit and H.W. de Haan explaining how threaded conversations such as found on mailing lists are adversely affected by those who "top post" instead of "bottom post" their replies.
Exim Includes a current version download section, mailing lists , documentation and FAQs, website credits, and Y2K information.
SecuriTeam Mailing Lists Location of various security mailing lists pertaining to exploits, hacking tools, and others.
Servlet Mailing Lists Collection of servlet-related mailing lists with searchable archives.
Perl.org Run by the Perl Foundation with the aim of being "the central directory of all things Perl". Lists news, applications, documentations, communities, and events. Also hosts various Perl projects, including the Perl core, and many mailing lists .