Yes, LimeSurvey software is free open source - everyone can use, modify and distribute it for commercial, private and educational
purposes under the GPL license v3
(exception: the name and logo LimeSurvey is trademarked,
so please don't advertise commercial services using the LimeSurvey brand.)
The development of LimeSurvey
has moved to a professional level, so we need funding to pay our developers.
That is why we now
offer a premium package for LimeSurvey.
At first, this Premium package will include ComfortUpdate
only, which can be used to conveniently update LimeSurvey from within the application. If you don't want
to use the ComfortUpdate function, you can still update to the latest version manually.
At a later
point, we will add more functions to the Premium package, so stay tuned!
LimeSurvey is under GPL so every feature in LimeSurvey will always be open to the general public.
However, there are feature components of the software like template editing, advanced survey export and so on that may get paid extras in the future.
A key expires either if the expiration date or the maximum number of uses for that key has been reached. One use is counted when you update to the latest version/build ComfortUpdate.
Yes, you can. Again, please note that each key has a maximum number of uses/updates assigned to it. See the previous FAQ item.