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This paper provides quantitative data that, in many cases, using open source software / free software (abbreviated as OSS/FS, FLOSS, or FOSS) is a reasonab...This paper provides quantitative data that, in many cases, using open source software / free software (abbreviated as OSS/FS, FLOSS, or FOSS) is a reasonable or even superior approach to using their proprietary competition according to various measures. This paper’s goal is to show that you should consider using OSS/FS when acquiring software. This paper examines market share, reliability, performance, scalability, security, and total cost of ownership. It also has sections on non-quantitative issues, unnecessary fears, OSS/FS on the desktop, usage reports, governments and OSS/FS, other sites providing related information, and ends with some conclusions. An appendix gives more background information about OSS/FS.

In the spirit of free and open source software (F/OSS), we are attempting to establish a community in which information will be freely exchanged, so that w...In the spirit of free and open source software (F/OSS), we are attempting to establish a community in which information will be freely exchanged, so that we may further the understanding of open source and its implications outside the realm of software development. We invite researchers to post their papers on open source and free software here, and to add themselves to the research directory, so that our community can become steadily larger and more comprehensive.

The International Free and Open Source Software Foundation (iFOSSF) is a 501c3 nonprofit organization incorporated in the United States. Its mission is to ...The International Free and Open Source Software Foundation (iFOSSF) is a 501c3 nonprofit organization incorporated in the United States. Its mission is to accelerate the development and usage of Information and Communication Technologies with Free and Open Source Software worldwide for sustained economic and social development, especially for the socially disadvantaged.

Free and open source software, also F/OSS, FOSS, or FLOSS (for Free/Libre/Open Source Software) is software which is liberally licensed to grant the right ...Free and open source software, also F/OSS, FOSS, or FLOSS (for Free/Libre/Open Source Software) is software which is liberally licensed to grant the right of users to study, change, and improve its design through the availability of its source code. This approach has gained both momentum and acceptance as the potential benefits have been increasingly recognized by both individuals and corporate players.[1][2]

This paper documents the first comprehensive empirical research on the geographical distribution and personal background of Libre Software developers. Whil...This paper documents the first comprehensive empirical research on the geographical distribution and personal background of Libre Software developers. While preceding studies relied on either a single tool or examined only a single project, like the Linux kernel, we include a mulitude of utilities, like the application Codd, which automatically examines source code to determine the author, or an online survey which obtained additional personal information never collected before. In addition to that, we examined a great variety of software projects, by accessing an online repository and including linux distributions with the highest rate of developing activity. As a result, we were able to bring an end to the most prejudices surrounding the personal background of Libre Software developers, as well as to state a very promising rank of European developers on a global scale, who are actually as numerous as their North American colleagues.

Esta web é o resultado dun proxecto desenvolvido por un grupo de profesores e alumnos da Escola Superior de Enxeñería Informática da Universidade de Vigo e...Esta web é o resultado dun proxecto desenvolvido por un grupo de profesores e alumnos da Escola Superior de Enxeñería Informática da Universidade de Vigo e financiado pola Dirección Xeral de Promoción Industrial e da Sociedade da Información a través da iniciativa Mancomun polo software libre. O seu principal obxectivo é o de pór a disposición das pequenas e medianas empresas un conxunto catalogado de aplicacións de xestión baseadas en software libre, con información que lles permita tomar decisións sobre a adecuación funcional e a viabilidade técnica e legal da súa utilización (casos de éxito, soporte, principais funcionalidades, tipo de licenza,...).

Our mission is to build a community to facilitate the study of Free and Open Source Software by providing free data analysis tools.

Debugging is of central importance to successful software development, and yet many beginning programmers are unaware of the techniques they can use to red...Debugging is of central importance to successful software development, and yet many beginning programmers are unaware of the techniques they can use to reduce the time they spend finding and fixing programming errors. GDB, a popular open source debugger, allows a programmer to trace program execution line by line, set breakpoints, inspect variables, and look at what the program is doing at any given time. DDD is a popular GUI front end for GDB, while Eclipse provides a complete integrated development environment. Using an assortment of real world coding errors-from simple typos to major logical blunders, The Art of Debugging with GDB, DDD, and Eclipse discusses how to manage memory, understand core dumps, and trace programming errors to their root cause. The book covers topics other debugging books omit-such as threaded, server/client, GUI, and parallel programming-as well as how to avoid common debugging pitfalls. You'll also learn about techniques and tools you can use to prevent errors, saving yourself valuable time and effort.

EDEN is the Engine for DEfinitive Notations. It is the primary software tool of the Empirical Modelling research group. We build models with it, using a va...EDEN is the Engine for DEfinitive Notations. It is the primary software tool of the Empirical Modelling research group. We build models with it, using a variety of definitive notations that it implements.

PyGeo is most fundamentally a framework for the creation of dynamic geometric constructions - i.e. constructions which embody defined and persistent geomet...PyGeo is most fundamentally a framework for the creation of dynamic geometric constructions - i.e. constructions which embody defined and persistent geometric relationships responsive to real time on-screen interactivity. PyGeo is, further, an implementation of this underlying abstract framework - exposing a range of geometric objects as the building blocks for virtual, dynamic geometric constructions. The focus is away from Euclidian geometry and metrics, and toward later geometric and mathematical developments - particularly those connected with projective geometry of real space, and the geometry of complex numbers on the plane and on the unit (Riemann) sphere.

Geomview is an interactive 3D viewing program for Unix. Geomview lets you view and manipulate three-dimensional objects: you use the mouse to rotate, trans...Geomview is an interactive 3D viewing program for Unix. Geomview lets you view and manipulate three-dimensional objects: you use the mouse to rotate, translate, zoom in and out, and so on. Geomview can be used as a standalone viewer for static objects or as a display engine for other programs which produce dynamically changing geometry. Geomview can display objects described in a variety of file formats. Geomview comes with a wide selection of example objects, and you can create your own objects too.

Until now three-dimensional geometry was difficult to teach – the complexity of designs in perspective, models that are difficult and time-consuming to con...Until now three-dimensional geometry was difficult to teach – the complexity of designs in perspective, models that are difficult and time-consuming to construct… Cabri 3D is the only program that enables you to alleviate these construction difficulties and that also contains the benefits of interactive geometry.

OpenEuclide is a 2D geometry software: figures are defined dynamically by describing formal geometrical constraints. This project is a basic tool for educa...OpenEuclide is a 2D geometry software: figures are defined dynamically by describing formal geometrical constraints. This project is a basic tool for educational or modeling purpose. It is distributed under the GNU GPL licence, free and multi-platform (up to now, GNU and windows).

KSEG is a Free (GPL) interactive geometry program for exploring Euclidean geometry. It runs on Unix-based platforms (according to users, it also compiles a...KSEG is a Free (GPL) interactive geometry program for exploring Euclidean geometry. It runs on Unix-based platforms (according to users, it also compiles and runs on Mac OS X and should run on anything that Qt supports). You create a construction, such as a triangle with a circumcenter, and then, as you drag verteces of the triangle, you can see the circumcenter moving in real time. Of course, you can do a lot more than that--see the feature list below.

KGeo is a program for interactive Geometry just like programs such as Euklid, Zirkel und Lineal or Kseg. It was my wish to write an open source version of ...KGeo is a program for interactive Geometry just like programs such as Euklid, Zirkel und Lineal or Kseg. It was my wish to write an open source version of this software that is free for schools and combines the best of both (all) worlds.

J. OUNG UNIVERSITY OF FLORIDA, (2001)

R. Cartwright (1998)

R. Joan-Arinyo and A. Soto-Riera and S. Vila-Marta Journal of Computing and Information Science in Engineering6(2):139-148(2006)

Robert Joan-Arinyo and Antoni Soto-Riera and S. Vila-Marta and Josep Vilaplana-Pasto Symposium on Solid Modeling and Applications, page105-115. (2002)

Robert Joan-Arinyo and Antoni Soto-Riera Computers & Graphics21(5):599-609(1997)

Robert Joan-Arinyo and Antoni Soto-Riera ACM Trans. Graph.18(1):35-55(1999)

Robert Joan-Arinyo and M. V. Luzón and Antoni Soto-Riera PPSN, volume2439ofLecture Notes in Computer Science, page759-768. Springer, (2002)

M. V. Luzón and Antoni Soto and J. F. Gálvez and Robert Joan-Arinyo Appl. Intell.22(2):109-124(2005)

Ulrich Kortenkamp and Jürgen Richter-Gebert Mathematical User-Interfaces Workshop 2004, (2004)

Ulrich H Kortenkamp Technische Wissenschaften ETH Zürich, Zürich, (2000)

Jürgen Richter-Gebert and Ulrich H. Kortenkamp Springer, 1 edition, (2000)

Robert Joan-Arinyo and Antoni Soto and Sebastià Vila Inteligencia Artificial, Revista Iberoamericana de Inteligencia Artificial(2003)

Miguel Abánades and Jesús Escribano and Francisco Botana Towards Mechanized Mathematical Assistants(2007)

Xiaoyu Chen and Dongming Wang Automated Deduction in Geometry(2007)

Philip Todd Automated Deduction in Geometry(2007)

c5(2007)

Ulrich Kortenkamp and Jürgen Richter-Gebert Automated Deduction in Geometry(2001)

Francisco Botana and José Valcarce Computational Science – ICCS 2006(2006)

Francisco Botana Computational Science — ICCS 2002(2002)