Aloha Editor is a JavaScript library that replaces ContentEditable with a new way to do content editing.

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Aloha Editor is available as Open Source Software licensed under GPLv2 or later.

If you are a commercial software developer and you want to release your software under a different license than GPLv2 or later licenses, you may purchase commercial licenses from Gentics Software GmbH

For details see: http://www.alohaeditor.org/