We can use the spark libraries, to make some arrangement?
is it legal?
We have read and understand that if.
To all this, when we have your application, we would like to put on the cover, references to “Openfire” “Spark” etc…
Please consult a local lawyer if you have license questions. Relying on forum replies may be a bad idea.
According to http://www.gnu.org/licenses/quick-guide-gplv3.html the Apache License 2.0 is compatible with GPLv3.
In this post that has happened to me, gives me reason.
And others I’ve been reading, it also gives me reason.
Now that I have taken more time to read other post of “gpl” and “openfire”
They conclude that developers do, for free, for the product grows.
That is absolutely free