1. Is "Spire.Office" nuget package a open source and free to use in enterprise applications ? Is there any specific version that is ONLY open source and free to use in enterprise applications
2. Is "FreeSpire.XLS" nuget package a open source and free to use in enterprise applications ? Is there any specific version that is ONLY open source and free to use in enterprise applications
3. When I tried "FreeSpire.PDF" nuget package version "6.10.6" I see "evaluation" warning message, Is that expected ? Is there any open source version that is free to use in enterprise
applications.