Translations:LimeSurvey PRO vs LimeSurvey CE/3/en
From LimeSurvey Manual
Before starting the discussion about LimeSurvey PRO (LimeSurvey Professional) and LimeSurvey CE (LimeSurvey Community Edition), it is important to understand the difference between LimeSurvey and LimeSurvey GmbH. The former refers to the web server-based software that is freely distributed under the GNU General Public License v2 (GPL v2) and above. The latter refers to the company that was built around the LimeSurvey software in order to better coordinate its development and provide different LimeSurvey paid services (e.g. hosting, personalized templates, add-on packages, technical support and so on).