The the source is open and free to study, modify, and
experiment with, but it is not free to use. Consider
our license waiver program if
you represent a worthwhile cause or run a project that you think
would be interesting to us. Please read
the rationale of our
license, or simply contact us if you have questions.
Features of our license
The legal license terms are stated in
the Verificatum License
1.0, but informally the license can be described as follows:
Source code is open.
Free for education, evaluation, research, and development.
Fair license fee to use in elections, including any
Our trademarks must be visible.
Fair License fees
Only pay for real use. You can experiment, analyze,
evaluate, and modify our source code in any way without
paying any license fee.
Only pay for actual voters. The license fee for a
given type of election is at any time proportional to the
maximum number of actual voters in any election so far.
Pay as you grow. After an election you only pay the
increase in the license fee. If there was no increase, then
you do not pay anything.
We recommend that you consult
guidelines if you intend to develop modified versions for
actual use to avoid redundant work and protect the security of
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