I remember being really impressed by REBOL, I thought it was a really cool language and I did make some small tools with it. To bad greed ruined it for everybody.
how did greed ruin it?
I had tried it out a bit earlier, but don't remember reading anything about it getting ruined.
As I remember it; it was free for personal use, but if you were to use it commercially, you had to pay a license cost. There also was a server version which could set you back thousands of dollars. If you wanted to export the REBOL API which you could create using the REBOL SDK to users, you needed a separate distribution license. It was a mess. When REBOL finally went open source in 2012, it was too late, everyone had moved on.