Glossary Term Definition:
Software can be considered open-source when it complies with the crieteria of the Open Source Initiative. Briefly summarized: to be considered open-source, the software or license must...
- ...be distributable and redistributable free of charge
- ...be distributed with uncompiled source code
- ...allow modifications and derived works
- ...restrict modifications and derived works only in the event of further development by the original author
- ...not discriminate against any person or group
- ...not discriminate against any field, profession, or endeavor
- ...be usable without acquisition of an additional license
- ...not be restricted to use as part of a larger software package
- ...not restrict the use of other software
- ...not be predicated on any individual technology or style of interface
A more detailed list of these conditions may be found here.