KBiff is a KDE "biff" or new mail notification utility. It is highly configurable but very easy to use and setup. It supports session managment (it "remembers" the last state it was in before you logged off) and can be docked into the panel. It has support for mbox (Unix-style), maildir (qmail-style), mh, POP3, IMAP4, and NNTP mailboxes.
The GNU Gatekeeper is a free H.323 gatekeeper based on the OpenH323 project. You can use it to manage a Voice-over-IP network and let endpoints (e.g., Netmeeting) communicate through symbolic names. It also has an external interface for billing and other applications. It runs on a number of Unix versions (including Linux and Solaris) and Windows.
The stunnel program is designed to work as an SSL encryption wrapper between remote client and local (inetd-startable) or remote server. It can be used to add SSL functionality to commonly used inetd daemons like POP2, POP3, and IMAP servers without any changes in the programs' code. It will negotiate an SSL connection using the OpenSSL or SSLeay libraries. It calls the underlying crypto libraries, so stunnel supports whatever cryptographic algorithms you compiled into your crypto package.
Zorp is a proxy firewall suite with its core architecture is built around today's security demands: it uses application level proxies, is modular and component based, uses a script language to describe policy decisions, makes it possible to monitor encrypted traffic, lets you override client actions, and lets you protect your servers with its built in IDS capabilities.
PushToTest TestMaker is a distributed test automation platform for application performance management and monitoring. It repurposes tests written in Selenium, soapUI, TestGen4Web, and Mozmill, and unit tests in Java, .NET, Jython, Groovy, PHP, Ruby, and Perl into functional tests, load and performance tests, and business service monitors. TestMaker is ideal for Web applications, Service Oriented Architecture (SOA) applications, Rich Internet Application (RIA using Ajax, Flex, Flash) and Business Process Management (BPM) applications.
Multi-router looking glass for PHP is a full rewrite of the Perl version of MRLG into PHP. It allows network administrators to execute commands on multiple routers via a nice Web interface. It is flexible, clear, and configurable. Default, per-router, and per-service options may be set. The Web-page layout and queries set are adjustable.
yaSSL is a C++ based SSL library for embedded and RTOS environments, designed for individuals who prefer to use the C++ language. For a C-based solution, please see CyaSSL. yaSSL supports the industry standards up to TLS 1.2, and also includes an OpenSSL compatibility interface.
NetMate is a flexible and extensible network measurement tool (meter). It can be used for accounting, delay/loss measurement, packet capturing, and much more. The main advantage over other existing tools is that it can be easily extended due to its modular (class-based) structure and dynamic loadable packet processing and information export modules. It also has fast and flexible packet classifier that can be easily extended with new packet filter attributes. A GUI for controlling multiple meters and displaying measurement results is currently under development. NMRSh is the Netmate Remote Shell, which allows you to remote control netmate meters.