Anti-Spam SMTP Proxy Server implements multiple spam filters

A universal instant messaging (IM) program

Postfix Admin is a Web Based Management tool created for Postfix. It is a PHP based application that handles Postfix Style Virtual Domains and Users that are stored in MySQL or PostgreSQL.

The fastest and easiest way to detect mobile devices

Plugin for Irssi which monitors torrent IRC announce channels, downloads torrent files based on a user-defined filter, and then sends the torrent files to a local or remote torrent client. Supports several different private trackers.

A network security analysis and monitoring toolkit Linux distribution.

The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, Webmail, calendaring, and mailing list services.

Zentyal is the Outlook-compatible, Exchange alternative on Linux

Library to control radio transceivers and receivers

Vicidial Contact Center Suite

Open source DKIM library, MTA filter implementation and associated tools.

Easy way to use the 1-wire sensors like temperature, voltage and more.

Vipul's Razor is a distributed, collaborative, spam detection and filtering network. The primary focus of the system is to identify and disable an email spam before its injection and processing is complete.

The NCID (Network Caller ID) project is Caller ID (CID) distributed over a network. The project contains the NCID package and 4 optional client packages. Each package is described at the NCID web site. A non-inclusive list of 3rd party addons is also available at the web site Available Packages: NCID - contains the server, gateways, and a client with output modules LCDncid - a client that uses LCDproc to display Caller ID on a LCD display NCIDandroid - a client and gateway combination for Android devices NCIDdisplay - a homebrew client that displays on large LED modules NCIDpop - a popup client for Windows, Mac, and Linux

OpenSource Call Center and Dialer System

Fast Bayesian spam filter along lines suggested by Paul Graham

qmHandle is a tool which can be used to manage the qmail message queue. It's written in Perl (so fully customizable) and has more features than qmail-qread and qmail-qstat.

Full SMTP/Mail server Appliance in 5 minutes

Server bundle of : Apache2 , MySQL , PostgreSQL , OpenSSL , Xmail , SlimFTPd Software developing triad of : PHP , Perl and Python + Apache2TriadCP , PHPmyadmin , PHPPgAdmin , AWStats , UebiMiau , PHPXMail , PHPSFTPd. All latest stables , all manuals

Multiplatform Ham Radio APRS and Mapping Program

Two tools able to edit your ipfilter.dat . These tools are able to edit your ipfilter.dat in order to check for big ranges and to check adjacent ranges . From the creators of ipfilterX , Nexus23 Labs . - Updates in Progress -

SpamAssassin for Win32 is a free and powerful anti-spam filter for Windows. Includes a resident daemon for mail servers and a user-friendly personal spam filter that works with any POP3 account and any email client.

Perl script to close a TCP connection under Linux, whatever its state is (half-open, established, waiting or closing state).

Mailing List Manager - Web-based, Self-Hosted, Feature-Rich

AmphetaDesk is a cross-platform, highly customizable, news aggregator - it sits on your desktop, downloads the latest news that interests you, and displays them in a quick, easy to use and customizable webpage. No webserver required.