open source (and yes, for APL too)

[rinus plasmeijer]

> I think the Clean IDE is written in Clean, is it not?   

It is. However, it has been written in a very old version of Clean (0.8)
and has been automatically converted to Clean 1.0 syntax.
Clearly therefore not the best example of a big Clean program.


> What about the language itself?

The current 1.3 release of the compiler is partly written in C (the
compiler and code generator), partly in Clean (the linkers).
For the new 2.0 system the compiler is completely rewritten in Clean.


Greetings,

Rinus