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UNFS3 is a user-space implementation of the NFSv3 server specification. It provides a daemon for the MOUNT and NFS protocols, which are used by NFS clients for accessing files on the server. Since it runs in user-space, you can use it in a jail.

shimmer is a pair of small programs (a client and a server) that provide an alternative to port knocking program such as tumbler and are used to hide a valuable port (such as a hidden web server or SSH) on a public IP address.

Radiator is a highly configurable and flexible Radius server that supports authentication by a huge range of authentication methods such as Flat files, DBM files, Unix password files, SQL databases, remote Radius servers (proxying), external programs, NT User Manager, Active Directory, LDAP, PAM, iPASS, GRIC, NIS+, Tacacs+, a wide range of ISP billing packages such as Emerald, Platypus, Rodopi, Hawk-i, Interbiller98, Freeside etc, your legacy user database etc, etc. Radiator now supports more 802.1x secure wireless and LAN authentication methods than any other Radius server giving a wide choice of 802.1x network clients. Radiator also includes many features not found in other Radius servers such as double-login prevention, username rewriting, full vendor-specific attributes, time-of-day blocking and a GUI for running user tests. Full list of technical features. Runs on all Unix, Linux, Windows 95, 98, NT, 2000, Mac OS-9 and Mac OS-X, VMS. Due to license restrictions, this package must be purchased and manually downloaded from the Open System Consultants web site.

The Cyrus IMAP (Internet Message Access Protocol) server provides access to personal mail and system-wide bulletin boards through the IMAP protocol. The Cyrus IMAP server is a scaleable enterprise mail system designed for use from small to large enterprise environments using standards-based technologies. A full Cyrus IMAP implementation allows a seamless mail and bulletin board environment to be set up across multiple servers. It differs from other IMAP server implementations in that it is run on "sealed" servers, where users are not normally permitted to log in. The mailbox database is stored in parts of the filesystem that are private to the Cyrus IMAP system. All user access to mail is through software using the IMAP, POP3, or KPOP protocols. The private mailbox database design gives the server large advantages in efficiency, scalability, and administratability. Multiple concurrent read/write connections to the same mailbox are permitted. The server supports access control lists on mailboxes and storage quotas on mailbox hierarchies.

The Cyrus IMAP (Internet Message Access Protocol) server provides access to personal mail and system-wide bulletin boards through the IMAP protocol. The Cyrus IMAP server is a scaleable enterprise mail system designed for use from small to large enterprise environments using standards-based technologies. A full Cyrus IMAP implementation allows a seamless mail and bulletin board environment to be set up across multiple servers. It differs from other IMAP server implementations in that it is run on "sealed" servers, where users are not normally permitted to log in. The mailbox database is stored in parts of the filesystem that are private to the Cyrus IMAP system. All user access to mail is through software using the IMAP, POP3, or KPOP protocols. The private mailbox database design gives the server large advantages in efficiency, scalability, and administratability. Multiple concurrent read/write connections to the same mailbox are permitted. The server supports access control lists on mailboxes and storage quotas on mailbox hierarchies.

sheerdns is a master DNS server whose zone records are stored on a one-record-per-file bases. Because of this, sheerdns is likely the simplest DNS to configure, use, update, and operate. It's especially efficient for networks with frequent updates -- serving DHCP, for example. Updates to the zones are immediate, and do not require restarting sheerdns. SheerDNS is a good candidate for creating and RBL for mail, or web sites, as well as for providing DNS on embeded systems. Or anything else that requires a fast DNS, with very low overhead.

Mail::Sender provides an object oriented interface to sending mails. It doesn't need any outer program. It connects to a mail server directly from Perl, using Socket.

Event::tcp is a bunch of glue code to make it very easy to build client-server style TCP-based services.

Provides a POP3 class to access POP3 server. Support all POP3 commands including UIDL listings, APOP authentication, DIGEST-MD5 and CRAM-MD5 using optional Auth_SASL package.

Speedtest.net Mini is a package that allows to free speed test on your own server that uses the same technology as Speedtest.net.