he goal of the CGAL Open Source Project is to provide easy access to efficient and reliable geometric algorithms in the form of a C++ library

Dexy is a free-form literate documentation tool for writing any kind of technical document incorporating code. Dexy helps you write correct documents, and to easily maintain them over time as your code changes. Dexy is open source software, so it's absolutely free to use. If you'd like more information about what Dexy is and how it works, visit the intro page.

Flot is a pure Javascript plotting library for jQuery. It produces graphical plots of arbitrary datasets on-the-fly client-side.

ExpanDrive 2 adds support for plain FTP, FTP and Amazon S3 and our own Strongspace Online Storage service. It boasts an all-new SFTP engine that should dramatically improve speed in both transfer and browsing. Along with the new drive types, the UI has been completely re-written to be much sexier, more intuitive and less complicated. We think you’ll really enjoy it.

Boost provides free peer-reviewed portable C++ source libraries.

We emphasize libraries that work well with the C++ Standard Library. Boost libraries are intended to be widely useful, and usable across a broad spectrum of applications. The Boost license encourages both commercial and non-commercial use.

The Rediff Interview/Protima Bedi

Flashback provides encrypted backups to the cloud, giving you reliable access to your data along with the peace of mind that it's secure.

WhisperMonitor provides a software firewall capable of dynamic egress filtering and real-time connection monitoring, giving you control over where your data is going and what your apps are doing

The core problem with the Android screenlock is that it's entered via the touchscreen, which leaks a considerable amount of information through the greasetrail that your fingers leave behind. The paper "Smudge Attacks on Smartphone Touch Screens" examines the efficacy of this attack in great detail. Even after using a phone for several minutes after an unlock, as well as after having the phone in your pocket, smudge trails still remain usable.

WhisperCore is a secure Android platform dedicated to providing the security and management features necessary for transforming a consumer phone into an enterprise-class device.

Jison is essentially a clone of the parser generator Bison (thus Yacc,) but in JavaScript. It includes its own lexical analyzer modeled after Flex.

Sphinx is a tool that makes it easy to create intelligent and beautiful documentation, written by Georg Brandl and licensed under the BSD license.

Most Bittorrent trackers today comes with functions that not everyone may need, such as torrent indexing software, forums and ratio management. Bitstorm tries to implement the very basic tracker protocol in a simple and easy way. It has no forums, no login requirement and no other bloat. It is easy to configure and install on any web server that supports the PHP scripting language.

Please note that Bitstorm wasn't meant to be run on high-traffic sites that receives 10+ announces per second. If you expect to have more than 1000 peers, consider using some other software. This is a limitation of using text file databases. (There is a MySQL version of Bitstorm, see below.)

Polycode is a free, open-source, cross-platform framework for creative code. You can use it as a C++ API or as a standalone scripting language to get easy and simple access to accelerated 2D and 3D graphics, hardware shaders, sound and network programming, physics engines and more.

A digital sundial displays the current solar time in digits, words, or pictures

UPX achieves an excellent compression ratio and offers very fast decompression. Your executables suffer no memory overhead or other drawbacks for most of the formats supported, because of in-place decompression

Shed Skin is an experimental compiler, that can translate pure, but implicitly statically typed Python (2.4-2.7) programs into optimized C++. It can generate stand-alone programs or extension modules that can be imported and used in larger Python programs.

The Cython language is very close to the Python language, but Cython additionally supports calling C functions and declaring C types on variables and class attributes. This allows the compiler to generate very efficient C code from Cython code

thttpd is a simple, small, portable, fast, and secure HTTP server.

Gunicorn 'Green Unicorn' is a Python WSGI HTTP Server for UNIX. It's a pre-fork worker model ported from Ruby's Unicorn project. The Gunicorn server is broadly compatible with various web frameworks, simply implemented, light on server resources, and fairly speedy.

WStats is a free powerful and featureful tool that generates advanced web, streaming, ftp or mail server statistics, graphically. This log analyzer works as a CGI or from command line and shows you all possible information your log contains, in few graphical web pages. It uses a partial information file to be able to process large log files, often and quickly. It can analyze log files from all major server tools like Apache log files (NCSA combined/XLF/ELF log format or common/CLF log format), WebStar, IIS (W3C log format) and a lot of other web, proxy, wap, streaming servers, mail servers and some ftp servers.
Take a look at this comparison table for an idea on features and differences between most famous statistics tools (AWStats, Analog, Webalizer,…).