感謝您對「自由軟體鑄造場」的支持與愛護，十多年來「自由軟體鑄造場」受中央研究院支持，並在資訊科學研究所以及資訊科技創新研究中心執行，現已完成階段性的任務。 原網站預計持續維運至 2021年底，網站內容基本上不會再更動。本網站由 Denny Huang 備份封存。
也紀念我們永遠的朋友 李士傑先生（Shih-Chieh Ilya Li）。
也紀念我們永遠的朋友 李士傑先生（Shih-Chieh Ilya Li）。
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The OpenFoundry Resource Catalog lists professional resources and applications related to the development of open source software. If you have any recommendation listing / category or bug for this resource catalog, please do not hesitate to contact us. From Copyright to Copyleft: the birth, growth and future of GPL (Author: Florence T.M. Ko; Language: Chinese)
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This article firstly talks about GNU project. Secondly, it explains the four freedoms of free software, and then introduces the concept and characteristics of copyleft. In addition, it analyzes essential contents of GPL (GNU General Public License) v2, such as action conditions for copying, distributing, and modifying a program, and the infection of GPL to modified program, etc. Finally, it introduces two famous cases related to GPL: SCO vs. IBM lawsuit, and the case about Harald Welte's preliminary injection request against Sitecom's German subsidiary. It briefly talks about the upgrade to GPLv.3 as well.
p.s. GPL v.3 had not yet been released while this articles finished. Thus, this article talks less about GPL v.3
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Address：No.128, Sec.2, Academia Rd., Institute of Information Science, Academia Sinica, Nangang District, Taipei City 11529, Taiwan (R.O.C).
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