The Open Software License (OSL)[2] is a software license created by Lawrence Rosen. The Open Source Initiative (OSI) has certified it as an open-source license, but the Debian project judged version 1.1[3][4] to be incompatible with the DFSG. The OSL is a copyleft license, with a termination clause triggered by filing a lawsuit alleging patent infringement.
Many people in the free software and open-source community feel that software patents are harmful to software, and are particularly harmful to open-source software.[5] The OSL attempts to counteract that by creating a pool of software which a user can use if that user does not harm it by attacking it with a patent lawsuit.
^ abCite error: The named reference gnu was invoked but never defined (see the help page).
^"Open Source Initiative OSI – The Open Software License 3.0 (OSL-3.0:Licensing | Open Source Initiative". Opensource.org. October 31, 2006. Retrieved March 4, 2012.
^"DFSGLicenses – Debian Wiki". Wiki.debian.org. February 28, 2012. Retrieved March 4, 2012.
^"Open Source Initiative OSI - The "Open Software License":Licensing". Opensource.org. May 1, 2006. Archived from the original on May 1, 2006. Retrieved October 15, 2012.
^"BusinessWeek". February 6, 2006. Archived from the original on February 8, 2006. Retrieved March 4, 2012.
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