Likewise Open : joins Linux, Unix, & Mac OS machines to Microsoft Active Directory and securely authenticates users with their domain credentiials

Likewise Open is an application that joins Linux, Unix, and Mac OS machines to Microsoft Active Directory and securely authenticates users with their domain credentials. Features include: joining non-Windows systems to Active Directory domains in a single step from the command line or from a GUI; authenticating users with a single user name and password; enforcing the same password policies for all platforms; supporting multiple forests with one-way and two-way cross forest trusts; caching credentials in case your domain controller goes down; and providing single sign-on for SSH and Putty. It does not require Active Directory schema changes for installation.

• Licenses : GPL, GPLv2
• Operating Systems : Mac OS X, Windows, Unix

zlib : Designed to be a free, general-purpose, legally unencumbered, lossless data-compression library for use on virtually any computer hardware

zlib is designed to be a free, general-purpose, legally unencumbered, lossless data-compression library for use on virtually any computer hardware and operating system. The zlib data format is itself portable across platforms. Unlike the LZW compression method used in Unix compress(1), the compression method currently used in zlib essentially never expands the data. (LZW can double or triple the file size in extreme cases.) zlib's memory footprint is also independent of the input data and can be reduced, if necessary, at some cost in compression.

• Licenses : zlib/libpng
• Operating Systems : OS Independent
• Implementation : C

libmemcached : A C client library for interfacing to a memcached server

libmemcached is a C client library for interfacing to a memcached server. It has been designed to be light on memory usage, thread safe and to provide full access to server side methods. It also implements several command line tools: memcat, memflush, memrm, memstat, and memslap (for load generation). The library has been designed to allow for different hashing methods on keys, partitioning by keys, and to use consistent hashing for distribution.

• Licenses : BSD Revised
• Operating Systems : POSIX
• Implementation : C, C++

Botan : A C++ library of cryptographic algorithms, including AES, DES, SHA-1, RSA, DSA, Diffie-Hellman, and many others

Botan is a C++ library of cryptographic algorithms, including AES, DES, SHA-1, RSA, DSA, Diffie-Hellman, and many others. It also supports SSL/TLS, X.509 certificates and CRLs, and PKCS #10 certificate requests, and has a high level filter/pipe message processing system. The library is easily portable to most systems and compilers, and includes a substantial tutorial and API reference.

• Licenses : BSD Revised
• Operating Systems : Linux, Mac OS, X Windows, Windows, FreeBSD, NetBSD, Solaris
• Implementation : C++, Assembly

NetCDF : A format developed at Unidata that was inspired by the CDF format from NASA

NetCDF is a format developed at Unidata that was inspired by the CDF format from NASA. NetCDF stands for "Network Common Data Form" and is a self-describin

g data format, commonly used in scientific and engineering applications.

• Licenses : BSD Original
• Operating Systems : POSIX, IRIX, HP-UX, GNU/Hurd, BSD, OpenBSD, NetBSD, FreeBSD, Unix, Solaris, SCO, Linux, BSD/OS, AIX, Windows
• Implementation : Fortran, C++, C

Barcode Writer in Pure Postscript implements the printing of many barcode formats entirely within PostScript

Barcode Writer in Pure Postscript implements the printing of many barcode formats entirely within PostScript, so that the process of converting the input string into the printed output is performed by the printer itself. The project supports all major barcode formats including EAN-13, EAN-8, UPC-A, UPC-E, ISBN, Code 128 (A, B, and C), Code 39, Code 93, Code 11, ITF-14, GS1 DataBar, MSI, Plessey, Postnet, Code 2 of 5, Codabar, QR Code, PDF417, MaxiCode, Aztec Code, Data Matrix, PostNet, OneCode, RM4SCC, AusPost, etc.

• Licenses : MIT/X
• Operating Systems : OS Independent
• Implementation : PostScript

Glass : A library for distributed computing and cloud computing, focusing in high performance, low lag applications

Glass is a library for distributed computing and cloud computing, focusing in high performance, low lag applications, particularly virtual and augmented reality.

The Glass framework is a scalable set of components that can be used by applications to perform distributed computing. Applications are built reusing the available components as needed. One of the major goals of Glass is to be a user-friendly framework, not only suitable for new applications, but also for legacy code. This is an important feature, as most available solutions for distributed computing require a substantial amount of rewrite of legacy code; some of them require a complete change of the application design.

• Licenses : LGPL
• Operating Systems : Mac OS X, Windows, Cygwin, POSIX, IRIX, Linux
• Implementation : C++, Java

Disko : A user interface application framework for the fast and simple development of flexible applications on embedded Linux systems

Disko is a user interface application framework for the fast and simple development of flexible applications on embedded Linux systems, with a particular focus on interactive user interfaces. It is high-performance and easy to learn, and due to its architecture is well suited to creating complex applications.

• Licenses : LGPL
• Operating Systems : POSIX, Linux
• Implementation : C++

XML Security Library : A C library based on LibXML2

XML Security Library is a C library based on LibXML2. It provides an implementation for major XML security standards: XML Digital Signature and XML Encryption.

• Licenses : MIT/X
• Implementation : C

BRL-CAD : A powerful constructive solid geometry solid modeling system

BRL-CAD is a powerful constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing support for rendering and geometric analysis, path-tracing for realistic image synthesis, network distributed framebuffer support, and image and signal-processing tools.

• Licenses : BSD Revised, LGPL, Public Domain
• Operating Systems : Unix, Mac OS X, Windows, Cygwin, POSIX, BSD, IRIX, Linux, Solaris
• Implementation : C, C++, PHP, Tcl, Unix Shell

Poppler : PDF rendering library derived from xpdf

Poppler is a PDF rendering library derived from xpdf. It has been enhanced to utilize modern libraries. It also provides basic command line utilities.

• Licenses : GPL
• Operating Systems : Unix, POSIX
• Implementation : C++

Guitone : A Qt-based, cross-platform graphical user interface for the distributed version control system monotone (http://monotone.ca)

Guitone is a Qt-based, cross-platform graphical user interface for the distributed version control system monotone (http://monotone.ca). It aims towards full implementation of the monotone command line interface and is specially targeted at beginners.

• Licenses : GPL
• Operating Systems: Mac OS X, Windows, POSIX, Linux
• Implementation : C++

libqrencode : A library for encoding data in a QR Code symbol

libqrencode is a library for encoding data in a QR Code symbol, a kind of 2D symbology.

• Licenses : LGPL
• Operating Systems : Unix, Mac OS X
• Implementation : C

Flex : A tool for generating programs that recognize lexical patterns in text

Flex is a tool for generating programs that recognize lexical patterns in text. There are many applications for Flex, including writing compilers in conjunction with GNU Bison. Flex is a free implementation of the well known Lex program. It features a Lex compatibility mode, and also provides several new features such as exclusive start conditions.

• Licenses : BSD Revised, GPL, BSD Original

Poppler : A PDF rendering library derived from xpdf

Poppler is a PDF rendering library derived from xpdf. It has been enhanced to utilize modern libraries. It also provides basic command line utilities.

• Licenses : GPL
• Operating Systems : Unix, POSIX
• Implementation : C++

Likewise Open : Joins Linux, Unix, and Mac OS machines to Microsoft Active Directory and securely authenticates users with their domain credentials

Likewise Open is an application that joins Linux, Unix, and Mac OS machines to Microsoft Active Directory and securely authenticates users with their domain credentials. Features include: joining non-Windows systems to Active Directory domains in a single step from the command line or from a GUI; authenticating users with a single user name and password; enforcing the same password policies for all platforms; supporting multiple forests with one-way and two-way cross forest trusts; caching credentials in case your domain controller goes down; and providing single sign-on for SSH and Putty. It does not require Active Directory schema changes for installation.

• Licenses : GPL GPLv2
• Operating Systems : Mac OS X, Windows, Unix

libopkele : A C++ implementation of an OpenID decentralized identity system

libopkele is a C++ implementation of an OpenID decentralized identity system. It provides OpenID protocol handling, leaving authentication and user interaction to the implementor.

• Licenses : MIT/X
• Operating Systems : POSIX, Linux
• Implementation : C++

NeL and the attached server and client code is a platform to create and run a multi-user 3D virtual environment for entertainment purposes

NeL and the attached server and client code is a platform to create and run a multi-user 3D virtual environment for entertainment purposes. It is used as the core of Ryzom (ryzom.com), a 3D MMORPG. The server and client code is Linux and Windows based.

• Licenses : GPL
• Operating Systems : POSIX, Linux, Windows, Mac OS X
• Implementation : C++

Unity : A user-friendly development environment for designing and programming 3D games and a 3D game engine

Unity is a user-friendly development environment for designing and programming 3D games and a 3D game engine. Scripting is done using JavaScript, C#, or Boo via an embedded Mono run time. The resulting games can be deployed as stand-alone Mac OS X or Windows applications, Web plug-ins, or as Dashboard widgets. Unity is the tool that was used by Unity Technologies to create their game Gooball, which is available from Ambrosia Software.

• Licenses : Commercial but free to use
• Operating Systems : Mac OS X Windows
• Implementation : C#, C++, Objective C, Other Scripting Engines

The Metasploit Framework : A platform for developing, testing, and using exploit code

The Metasploit Framework is a platform for developing, testing, and using exploit code. The framework has been used on platforms ranging from large mainframes to the Apple iPhone.

• Licenses : BSD Revised
• Operating Systems : OS Independent
• Implementation : Assembly, C, Ruby