I paid a visit to the Raw Therapee website this evening and was delighted to find that stable version 3.0.0 has finally become available, after a long series of interim development releases. Among other changes since 2.4.1, for the first time a Mac OS X version is available in addition to Windows and Linux versions.
Details here:
http://rawtherapee.com/
Details here:
http://rawtherapee.com/