Open Source Software Licensing Page
- Some very interesting articles on free software licensing: history, forms, and problems, seen from a commercial view. Links to some license texts and important open source sites.
Affero - General Public License - Copyleft license, derived from the GNU-GPL, designed to protect software distributed as web services.
Open Source License Law Resource Center - Comprehensive set of links and other resources about open source licenses, and legal issues regarding such licenses and use of open source software, by attorney Dennis Kennedy.
OpenSource.org: Open Source Definition - Not a license itself, but a definition of what conditions a license must fulfill in order to be termed an Open Source license.
Python Copyright - Open source compliant, but not fully GPL compatible, the only incompatibility is inclusion of a choice-of-law clause.
Quick Reference Guide - A chart comparing attributes of major licenses, including the option to select your bias.
RTEMS License Information - RTEMS open source real-time operating system uses GNU Public License (GPL), except for some special, very limited exceptions.
Ruby License - Dual terms: use GPL terms or its own terms.
SFL License Agreement - Covers iMatix Corp., Standard Function Library (C/C++), its source code, documentation, executable files.
Tcl/Tk License Terms - By Regents of the University of California, Sun Microsystems, Inc., Scriptics Corp., others.