<p>Boost provides free peer-reviewed portable C++ source libraries.</p>

<p>Boost emphasizes 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.</p>

<p>Boost aims to establish &ldquo;existing practice&rdquo; and provide

reference implementations so that Boost libraries are suitable for

eventual standardization. Ten Boost libraries are already included in the

C++ Standards Committee's Library Technical Report (TR1) as a step toward

becoming part of a future C++ Standard. More Boost libraries are proposed

for the upcoming TR2.</p>

<h2><a href="http://www.busybox.net">BusyBox</a></h2>

<p>BusyBox combines tiny versions of many common UNIX utilities into a

single small executable. It provides replacements for most of the

utilities you usually find in GNU fileutils, shellutils, etc. The

utilities in BusyBox generally have fewer options than their

full-featured GNU cousins; however, the options that are included

provide the expected functionality and behave very much like their GNU

counterparts. BusyBox provides a fairly complete environment for any

small or embedded system.</p>

<p>BusyBox has been written with size-optimization and limited

resources in mind. It is also extremely modular so you can easily

include or exclude commands (or features) at compile time. This makes

it easy to customize your embedded systems. To create a working

system, just add some device nodes in /dev, a few configuration files

in /etc, and a Linux kernel.</p>

<h2><a href="http://darcs.net/">Darcs</a></h2>

<p>Darcs is a distributed revision control system written in Haskell. In

Darcs, every copy of your source code is a full repository, which allows for

full operation in a disconnected environment, and also allows anyone with

read access to a Darcs repository to easily create their own branch and

modify it with the full power of Darcs' revision control. Darcs is based on

an underlying theory of patches, which allows for safe reordering and

merging of patches even in complex scenarios. For all its power, Darcs

remains a very easy to use tool for every day use because it follows the

principle of keeping simple things simple.  Darcs is free software

licensed under the GNU GPL.</p>

<h2><a href="http://evergreen-ils.org/">Evergreen</a></h2>

<p>The Evergreen Project develops an open source ILS (integrated library

system) used by hundreds of libraries across the world. The software, also

called Evergreen, is used by libraries to provide their public catalog

interface as well as to manage back-of-house operations such as

circulation (checkouts and checkins), acquisition and cataloging of

library materials, and sharing resources among groups of libraries and

consortia on the same Evergreen system.  Evergreen is designed to be

scalable and supports library operations ranging from a small high school

to large state-wide consortia.  Evergreen is released under

the <a href="http://www.gnu.org/licenses/gpl-2.0.html">GPLv2</a>-or-later.</p>

<h2><a href="http://www.foresightlinux.org/">Foresight Linux</a></h2>

<p>Foresight is a desktop operating system featuring an intuitive user

interface and a showcase of the latest desktop software, giving users

convenient and enjoyable access to their music, photos, videos,

documents, and Internet resources.</p>

<p>As a Linux distribution, Foresight sets itself apart by eliminating

the need for the user to be familiar with Linux.</p>

<h2><a href="http://www.gevent.org/">Gevent</a></h2>

<p>Gevent is a fast, coroutine-based networking library for Python.

Gevent is used in network applications, including servers that scale

up to tens thousands of connections but without the complexity usually

associated with event-driven architecture.</p>

<p>Gevent provides light-weight &ldquo;green&rdquo; threads with a similar

interface as the standard “threading” and

“multiprocessing” packages.  The library includes a DNS

resolver, a WSGI server, a monkey patching utility to make 3rd party

protocol implementations cooperative and support for SSL sockets.</p>

<h2><a href="http://www.git-scm.org/">Git</a></h2>

<p>Git is a free and open source distributed version control system

  designed to handle everything from small to very large projects with

  speed and efficiency.</p>

<p>Every Git clone is a full-fledged repository with complete history and

  full revision tracking capabilities, not dependent on network access

  or a central server. Branching and merging are fast and easy to do.</p>

<p>Git is used for version control of files, much like tools such as

  Mercurial, Bazaar, Subversion, CVS, Perforce, and Visual SourceSafe.</p>

<h2><a href="http://www.inkscape.org/">Inkscape</a></h2>

<p>Inkscape is an Open Source vector graphics editor, with capabilities

similar to Illustrator, Freehand, CorelDraw, or Xara X using the

open-standard Scalable Vector Graphics (SVG) file format. Inkscape's

main goal is to create a powerful and convenient drawing tool fully

compliant with XML, SVG, and CSS standards.</p>

<p>In contrast to raster (bitmap) graphics editors such as Photoshop or

Gimp, Inkscape stores its graphics in a vector format. Vector graphics

is a resolution-independent description of the actual shapes and

objects that you see in the image. This description is then used to

determine how to plot each line and curve at any resolution or zoom

level.</p>

<h2><a href="http://www.k-3d.org">K-3D</a></h2>

<p>K-3D is the free-as-in-freedom 3D modeling, animation, and rendering

system for GNU/Linux, MacOSX, and Windows operating systems. K-3D is based

on a powerful Visualization Pipeline that enables procedural modeling and

a robust plugin architecture, and is designed to scale to the needs of

professional artists.</p>

<h2><a href="http://kohanaframework.org">Kohana</a></h2>

<p>Kohana is an elegant HMVC PHP5 framework that provides a rich set of

components for building web applications.  It requires very little

configuration, fully supports UTF-8 and I18N, and provides many of the

tools that a developer needs within a highly flexible system. The

integrated class auto-loading, cascading filesystem, highly consistent

API, and easy integration with vendor libraries make it viable for any

project, large or small.</p>

<h2><a href="http://libbraille.org/">Libbraille</a></h2>

<p>Libbraille is a computer shared library which makes it possible to

easily develop software for Braille displays. It provides a simple API

to write text on the display, directly draw dots, or get the value of

keys pressed on the Braille keyboard. Libbraille supports a wide range

of Braille displays with a serial or USB connection and can

auto-detect most of them. Libbraille supports the terminals of the

following manufacturers: Alva, Baum, Blazie Engineering, EuroBraille,

HandyTech, Hermes, ONCE, Papenmeier, Pulse Data, TechniBraille and

Tieman.</p>

<h2><a href="http://www.mifos.org">Mifos</a></h2>

<p>Mifos is an award-winning Open Source software platform for microfinance,

leveraging a modern stack of Open Source technology frameworks to provide

microfinance institutions with the scalability and flexibility needed to

grow. In 2009, Mifos was awarded with the Duke's Choice Award for Best

Java Technology for the Open Source Community.</p>

<h2><a href="http://www.selenic.com/mercurial/wiki/">Mercurial</a></h2>

<p>Mercurial is a fast, lightweight Source Control Management system

which can track revisions to software during development.  Since its

conception in April 2005, Mercurial has been adopted by many projects

for revision control, including Xen, One Laptop Per Child, and the

Advanced Linux Sound Architecture (ALSA).  Mercurial runs on Unix-like systems, Mac

OS X, and Windows computers, and it is licensed under the GNU General

Public License.</p>

<h2><a href="http://www.openchange.org/">OpenChange</a></h2>

<p>OpenChange aims to provide a portable Open Source implementation of

  Microsoft Exchange Server and Exchange protocols.  Exchange is a

  groupware server designed to work with Microsoft Outlook, and providing

  features such as a messaging server, shared calendars, contact

  databases, public folders, notes and tasks.</p>

<h2><a href="http://pypy.org/">PyPy</a></h2>

<p>The PyPy project aims to provide:

<ul>

<li>a common translation and support framework for producing

implementations of dynamic languages, emphasising a clean

separation between language specification and implementation

aspects.</li>

<li>a compliant, flexible and fast implementation of the Python Language

using the above framework to enable new advanced features without having

to encode low level details into it.</li></ul>

</p>

<h2><a href="http://us1.samba.org/samba/">Samba</a></h2>

<p>Samba is a FOSS suite that provides seamless file and print

services to SMB/CIFS clients, namely, to Microsoft Windows. Samba is

freely available, unlike other SMB/CIFS implementations, and allows

for interoperability between Linux/Unix servers and Windows-based

clients.  Samba is software that can be run on a platform other than

Microsoft Windows. For example, Samba runs on Unix, GNU/Linux, IBM

System 390, Solaris, Mac OS X, and OpenVMS, among others. It is

standard on virtually all distributions of GNU/Linux and is commonly

included as a basic system service on other UNIX-based systems as

well. Samba uses the TCP/IP protocol that is installed on the host