Apache 2.0 is the default choice for the Netherlands eScience Center software license. Other license can be used in special cases, when software has already attached license or there are commercial partners that require different licensing.
The formal text of the licence is here: http://www.apache.org/licenses/LICENSE-2.0.html An informal explanation of what that means is here: http://www.oss-watch.ac.uk/resources/apache2
All software used in the project MUST HAVE compatible licenses. Compatibility should be checked when new external code is added to the project.
Listing licenses, request citation of paper if applicable.
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