I bet that a commercial license would be available on reasonable terms: Oberon Microsystems have been around for quite a while, and are quite good people (I used their Blackbox [neé Oberon/F] IDE for personal stuff for quite a while, and it's one of the nicest development environments I've ever worked with. (It's a bit of a surprise to see them writing Java, though.)
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I bet that a commercial license would be available on reasonable terms: Oberon Microsystems have been around for quite a while, and are quite good people (I used their Blackbox [neé Oberon/F] IDE for personal stuff for quite a while, and it's one of the nicest development environments I've ever worked with. (It's a bit of a surprise to see them writing Java, though.)