The latest version always contains a trial that expires at the end of the month. You can extend your trial for several months by downloading the latest version at the begining of every month.
Why this library is not free and open source?
ZZZ Projects mission is focused on adding value to the .NET Community and supporting a lot of free and open source libraries.
However, this mission cannot be successful without being able to pay our developers for the time they pass to support & develop features for free and paid libraries.
