For a software package to be listed on CLiki, its license must usually be free according to the Debian Free Software Guidelines (or DFSG). CLiki pages about licensing (most of which describe specific licenses) are
- 0BSD - Zero-Clause BSD is a variant of the ISC license
- AGPL - The GNU Affero General Public License (AGPL) is a strong copyleft license in the vein of the GPL, but focusing on server based applications
- Apache 2 - The 2.0 version of the Apache License is an OSI-compatible license
- Artistic License - A free software license
- BSD - BSD (the Berkeley System Distribution) is a variant of UNIX which was designed at the University of California Berkeley
- BSD license - From the Debian DFSG site:
- BSL - The Boost Software License 1.0 is a simple permissive license only requiring preservation of copyright and license notices for source (and not binary) distribution
- DFSG - The DFSG, or
- GPL - The GNU General Public License is the "copyleft" license used by most of the applications developed by the Free Software Foundation (FSF)
- GPL3 - GPL3 is a modification of the GPL2 license (not to be confused with the LGPL)
- ISC - The ISC license is a permissive free software license written by Internet Software Consortium (ISC)
- LGPL - LGPL refers to GNU Library General Public License, also known as the Lesser General Public License
- LLGPL - The Lisp Lesser General Public License is the GNU Lesser General Public License version 2.1 (LGPL) with a preamble from Franz (makers of Allegro Common Lisp)
- MIT - A software license; see MIT-LICENSE
- MIT-LICENSE - The MIT License is a DFSG-compliant License
- non-free - If we cannot be free, at least we can be cheap - FZ
- Unlicense - The Unlicense is a free public domain license
There are also substantial lists of licenses elsewhere:
- A list of licenses from the GNU project and whether the said licenses are GPL-compatible or not
- A list of OSI-compatible licenses from the Open Source Initiative (OSI)