BOSS is one of the more useful pieces of VisualWorks, so I'm interested to see that the Pharo project is acquiring a modern equivalent. Via Torsten:
Fuel - a new project to implement binary object serialization for Pharo is part of the ESUG SummerTalk. It's work in progress but already usable, there is a ConfigurationOfFuel metacello config to easily load it.
The existence of a Metacello configuration is key - it makes it very, very easy to load (and thus much easier to contribute to the project). Good stuff!