Comparison with use in software
The original gratis/libre distinction concerns software (i.e., code), with which users can potentially do two[citation needed] kinds of things: 1. access and use it; and 2. modify and re-use it. "Gratis" pertains to being able to access and use the code, without a price-barrier, while "libre" pertains to being allowed to modify and re-use the code, without a permission barrier. The target content of the open access movement, however, is not software but published, peer-reviewed research journal article texts.[7]
1. Source code accessibility and use. For published research articles, the case for making their text accessible free for all online (Gratis) is even stronger than it is for software code, because in the case of software, some developers may wish to give their code away for free, while others may wish to sell it, whereas in the case of published research article texts, all their authors, without exception, give them away for free: None seek or get royalties or fees from their sale.[8][dubious β discuss] On the contrary, any access-denial to potential users means loss of potential research impact (downloads, citations) for the author's researchβand researcher-authors' employment, salary, promotion and funding depends in part on the uptake and impact of their research.
2. Source code modifiability and re-use. For published research articles, the case for allowing text modification and re-use is much weaker than for software code, because, unlike software, the text of a research article is not intended for modification and re-use. (In contrast, the content of research articles is and always was intended for modification and re-use: that is how research progresses.) There are no copyright barriers to modifying, developing, building upon and re-using an author's ideas and findings, once they have been published, as long as the author and published source are creditedβbut modifications to the published text are another matter. Apart from verbatim quotation, scholarly/scientific authors are not in general interested in allowing other authors to create "mashups" of their texts. Researcher-authors are all happy to make their texts available for harvesting and indexing for search as well as data-mining, but not for re-use in altered form (without the permission of the author).
The formal analogy between open software and open access has been made,[9] along with the generalization of the gratis/libre distinction from the one field to the other.