Copies of licenses approved by the Open Source Initiative.

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.

Not a license itself, but a definition of what conditions a license must fulfill in order to be termed an Open Source license.

Covers licensing issues for developers distributing applications in PHP. Includes links to annotated version of the relevant licenses and other related resources.

A very permissive, open source compliant and GPL compatible license used by the team developing the Python programming language.

A chart comparing attributes of major licenses, including the option to select your bias.

RTEMS open source real-time operating system uses GNU Public License (GPL), except for some special, very limited exceptions.

Dual terms: use GPL terms or its own terms.

Covers iMatix Corp., Standard Function Library (C/C++), its source code, documentation, executable files.

License for the Squeak software suite, mainly provided by Apple.