What are some examples of sharealikecopyleft licenses. Free software e open source usano lo stesso mezzo libera. Per approfondire largomento lei licenza creative commons. Copyleft software licenses are considered protective or reciprocal, as. For example, a team of 120 people put in over 1 million personhours of work to create the game halo 3. Before we can understand copyleft, we must first introduce the concept of. Paying a few dollars for a game that took so much effort to create actually seems like pretty good value.
Differenza tra il software libero ed il software open source. Software libre y software libre no protegido con copyleft. Copyleft is a type of license that attempts to ensure that the public retains the freedom to use, modify, extend and redistribute a creative work and all derivative works i. Copyright e copyleft le differenze il musicista indie altervista.
A is a legal process used by creators and inventors to protect their work and to control distribution of their product. Software is the application of law to machinereadable software. There are variations, of coursethe lgpl, for example, is a weak copyleft. Sep 26, 2011 they work alongside and enable you to modify your terms to best suit your needs. Jun 24, 2006 copyleft is a type of license that attempts to ensure that the public retains the freedom to use, modify, extend and redistribute a creative work and all derivative works i. Circular 61 copyright registration of computer programs. This is largely due to the rules over what you can and cannot patent, but is also due to the pace at which software can become outdated, or superseded. Con molte differenze, ma limpostazione viene mantenuta, anche.
Fu inizialmente implementato nella gnu emacs general public license, e nel 1989 il primo programma indipendente sotto licenza gpl fu rilasciato. Under copyleft, infringement can be avoided if the wouldbe infringer perpetuates the same copyleft scheme. Copyleft a play on the wird copyricht is the practice o uisin copyricht law tae offer the richt tae distribute copies an modified versions o a. Peccato che funziona solo per chi al momento va forte nelle. Copyleft is a licensing scheme in which an author surrenders some, but not all, rights under law. Tra le opere dellingegno rientra anche il software. Copyleft, quindi, non significa che il programma e di dominio pubblico, ma solamente che e fruibile in maniera piu libera del software tutelato dalle strette maglie del.
Whether you want to register a user manual or other documentation for the computer program. If you publish computer software, the single most important legal protection available to you is the federal law. Le opere dellingegno musica, libri, cinema, software ecc. Fill in the author created space with the elements of the software package youre seeking to register, such as just the program itself or the. But many software authors dont take advantage of its protections, and risk finding themselves virtually at the mercy of infringers all because they dont send in a simple registration form as soon as the software. An expert understanding of copyleft would fill many books, but this article can be a starting point on your road to copyleft enlightenment. Copyleft, distinguished from, is the practice of offering people the right to freely distribute copies and modified versions of a work with the stipulation that the same rights be preserved in derivative works created later. Le precisazioni sono disponibili sul sito indicato del movimento copyleft. Jan 11, 2018 this feature is not available right now. To bene t from this part of the tutorial, readers should have a general familiarity with software develop. When completing your application, make sure to address the following issues. Whats the difference between copyright and copyleft.
Free software licenses can be divided into two broad categories. It is similar to the share alike stipulation of the creative commons licenses and the sa icon resembles the copyleft icon. Nonostante le differenze di forma, e di fatto molto difficile che una licenza possa soddisfare i requisiti per una definizione, ma non per laltra. B the gnu general public license, version 2 119 c the gnu lesser general public license, version 2. Sep 06, 2019 it is similar to the share alike stipulation of the creative commons licenses and the sa icon resembles the copyleft icon. Appunto di informatica sul con le sue varie caratteristiche, le licenze duso dei software e le varie leggi sullargomento. While many of the legal principles and policy debates concerning software have close parallels in other domains of law, there are a number of distinctive issues that arise with software.
Il concetto di software open source e stato forgiato nel 1998 da alcune persone tra le quali il piu conosciuto e eric s. Software open source, free software e copyleft iprights. If the source code contains both new material and preexisting material, complete the limitation. Va sottolineato che esiste unenorme differenza tra software libero e. E diverso anche dalla legge sui brevetti, che protegge le invenzioni. The gnu general public license, originally written by richard stallman, was is first and most prominent software copyleft license. Copyleft licensing is a form of creative commons licence, which is a system whereby a creator allows others to use their work without infringing. But copyleft also includes system in which the author can decide which rights he wants to keep on his works and which ones he is ready to surrender. Il e solo una delle varie forme di proprieta intellettuale. Le licenze copyleft per larte tengono conto di tali limitazioni, quindi differiscono dalle licenze copyleft per il software, ad esempio facendo una distinzione tra il lavoro iniziale e le copie in questo caso gli obblighi di copyleft sono applicabili soltanto alle copie e o passando sopra. Thats a huge amount of time and effort, and the company that created the game ought to be paid for their work. Mar 28, 20 if you publish computer software, the single most important legal protection available to you is the federal law. Copyleft is a form of licensing, and can be used to maintain conditions for works ranging from computer software, to documents, to ar. Playlist free and copyleft music di amby jamendo music.
A copyleft, on the other hand, provides a method for software or documentation to be modified, and distributed back to the community, provided it remains libre. A infers that only with the authors permission may such activities take place. E vietato redistribuirla con licenze che non siano copyleft. Il e solo uno dei tipi di proprieta intellettuale esistenti. May 10, 2016 the principles of copyleft are commonly used within the software industry, where source code is often free for anyone to modify. For whichever method you use, fill in the year of completion with the year you completed work on the computer program and the exact date the version youre seeking to register was first published. However, users must still attribute the work appropriately. Copyleft is an arrangement whereby software or artistic work may be used, modified, and distributed freely on condition that anything derived from it is bound by the same conditions of rights. The copyleft is an invented term, used to describe a that require. Playlist free and copyleft music di amby su jamendo music. Jun 15, 2010 copyleft says that anyone who redistributes the software, with or without changes, must pass along the freedom to further copy and change it. For this reason copyleft licenses are also commonly known as reciprocal or viral licenses. Whether different parties own the in the source code and the screen displays generated by the source code. Published by stanford copyright and fair use center.
Key features of copyleft copyleft finds its roots in the open source movement, which promotes the idea of collaboration. In software, open source copyleft licenses place the primary restriction that information helpful in supporting modification of software e. Copyleft a play on the wird copyricht is the practice o uisin copyricht law tae offer the richt tae distribute copies an modified versions o a wirk an requirin that. Fu inizialmente implementato nella gnu emacs general public license, e nel 1989 il primo programma indipendente sotto licenza gpl. Parte del software open source non e software libero. Il software libero e diverso dal software open source e viceversa. Copyleft software licenses are considered protective or reciprocal, as contrasted with permissive freesoftware licenses.
Jan 28, 2010 under copyleft, infringement can be avoided if the wouldbe infringer perpetuates the same copyleft scheme. Licenze software copyleft sono considerati protettivi o reciproca, in contrasto con. Software licensing is the subject of at least as much heated debate as text editors or packaging formats. Differenza tra software libero e open source wikipedia. Expondremos en este trabajo dichas criticas buenas y malas a copyleft. Copyleft licenses are often found on software packages, but can be used on any work. If you register your software after an infringement occurs, your potential remedies will include actual damages to the extent provable and any. Creative commons, copyleft, and other licenses copyright. Instead of allowing a work to fall completely into the public domain where no ownership of is claimed, copyleft allows an author to impose some restrictions on those who want to engage in activities that would more usually be reserved by the holder.
Non e come il marchio, che protegge nomi, slogan, loghi di brand e altri identificativi della fonte dallutilizzo altrui per determinati scopi. Software libre y software libre no protegido con copyleft by. Common practice for using copyleft is to codify the copying terms for a work with a license. They work alongside and enable you to modify your terms to best suit your needs.
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