There is a new useful article at EclipseZone about the differences between Eclipse Extension Registry and OSGi Services. The article describes in general terms some of the strengths and weaknesses of these two models, and makes some suggestions about making a choice.

If you are interested in this topic, read the full article at A Comparison of Eclipse Extensions and OSGi Services.

BTW, seems that the ubiquitous Spring framework and it’s OSGi support has got a lot of attention in the last months, and this article is not an exception.