I could not find a download link for version 6 any more. Could you please provide a link?
And just for clarification:
I thought the current version (now 7) is only available as a trial version which automatically changes into a version with several restrictions (e.g. max main memory: 1GB)
The last version (now 6) should be completely open source and fully-functional.
Please give me an uptate here if I missed anything. Thank you!