← All LicensesRejected
Convertible Free Software License v1.1 (C-FSL v1.1)
Added 2026-08-29
SoftwareCustomReview Tracked
License Review Status from OSI
👤 Elmar Stellnberger🗓️ First Submitted: 2018-09-26📅 169 days💬 90 Events
Latest event👤 Richard Fontana📅 2019-03-14Review
Reports that the OSI board decided to reject the Convertible Free Software License v1.4, in line with community consensus on the list and because further OSD-conforming revision seems unlikely.Full Text
Full Name: Convertible Free Software License Version 1.1
Short Identifier: C-FSL v1.1
URL: https://www.elstel.org/license/C-FSL-v1.1.txt
Rationale and Distinguish:
While the BSD license allows the whole world to re-license and while
re-licensing is virtually impossible with GPL since every contributor
would need to consent the C-FSL license goes a practical intermediate
way restricting the right to re-license to a group called the original
authors. That way open source developers are not excluded from making
business with others who want to base a proprietary product on the given
piece of open source software.
Proliferation Category & Legal Review:
Other/Miscellaneous
A lawyer from the EPA (Environmental Protection Agency, USA) has already
checked C-FSL for its proliferation properties. He has found the license
to be compatible with other open source licenses. He decided that C-FSL
can be used together with the CC0 license in the FDtool (functional
dependency mining tool) project.
list of software which uses C-FSL v1.1.:
qcoan: https://www.elstel.org/coan
xchroot, confinedrv, bundsteg, debcheckroot, dbschemacmd: also found at
www.elstel.org