libcurl is library for transferring files with URL syntax, supporting FTP, FTPS, HTTP, HTTPS, SCP, SFTP, TFTP, TELNET, DICT, LDAP, LDAPS and FILE. curl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies, cookies, user+password authentication (Basic, Digest, NTLM, Negotiate, kerberos...), file transfer resume, proxy tunneling and a busload of other useful tricks....

cppcheck tries to detect bugs that your c/c++ compiler don't see.
It is versatile. You can check code that has non-standard code such as various compiler extensions, inline assembly code, etc.

K-Meleon is a fast and customizable web browser that can be used instead of Internet Explorer on Windows. Powered by the same Gecko engine as the Firefox and Mozilla browsers, K-Meleon provides users with a secure browsing experience.

Ettercap is a network sniffer/interceptor/logger for ethernet LANs. It supports active and passive dissection of many protocols (even ciphered ones, like SSH and HTTPS). Data injection in an established connection and filtering on the fly is also possible, keeping the connection synchronized. Many sniffing modes were implemented to give you a powerful and complete sniffing suite. Plugins are supported. It has the ability to check whether you are in a switched LAN or not, and to use OS fingerprints (active or passive) to let you know the geometry of the LAN....

re2c is a tool for writing very fast and very flexible scanners. Unlike any other such tool, re2c focuses on generating high efficient code for regular expression matching. As a result this allows a much broader range of use than any traditional lexer offers. And Last but not least re2c generates warning free code that is equal to hand-written code in terms of size, speed and quality....

msmtp is an SMTP client with a sendmail compatible interface. It can be used with Mutt and other mail user agents.

ParaView is an application designed with the need to visualize large data sets in mind. The goals of the ParaView project include an open-source, multi-platform visualization application that support distributed computation models to process large data sets. It has an open, flexible, and intuitive user interface and is based on open standards architecture....

The ATK framework is a PHP business framework. It is targeted at developers who wish to focus on business logic instead of coding HTML. ATK provides a complete framework that requires only small amounts of code to get usable applications, while maintaining full flexibility. ATK has a model driven approach, but is 100% customizable....

WaypointHR is an HR database for managing employee records and personnel information. MySQL is used for the database and PHP (4 or 5) is used for the web browser based interface. Ease of use and effective management reports are key design goals.

x264 is a free software library and application for encoding video streams into the H.264/MPEG-4 AVC format, and is released under the terms of the GNU GPL.