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The NASA Open Source Agreement, model 1.3, is not a free application license because it contains a provision demanding improvements to be your "original creation". The CeCILL-C is a free software program license with a weak copyleft fairly like the GNU Lesser General Public License.
What is Plikli?

Plikli 2021 is an open source content management system that lets you easily create your own user-powered website.

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