Apple's open source strategy is well defined, but not, shall we say, integral to their company.  They take what works for them, give a bit back here and there, and mostly do proprietary, closed software and "ecosystems".  In some ways that's better than a mess (Nokia), but they're not really big open source boosters in the way IBM are.<p>Sun has given a <i>lot</i> to open source, but they don't seem to have gotten as much back as IBM.  I think once again the issue is that there wasn't a particularly clear strategy.