Now JetBrains IDEA, which is putatively a competitor to Eclipse in the Java IDE realm, has announced plans to support this compiler in their commercial product. On the wiki page for new features in IDEA 6.0 (code named Demetra), one of the new Core Features is listed as "Support for the Eclipse Java compiler". With this feature, IDEA users would be able to enjoy super-fast compilations and superior diagnostics. Perhaps IDEA could even tie into the incremental compilation that gives the Eclipse compiler an advantage over ant-based alternatives. And since the Eclipse license requires any enhancements to be donated back as open source, it's possible that the wizards at JetBrains can make further improvements to the compiler that will benefit both the IDEA and Eclipse communities.