Hello all, I have recently developed a new serialization library called StOMP(Smalltalk Objects on MessagePack). http://stomp.smalltalk-users.jp/ StOMP is a binary serializer for major Smalltalk dialects. For those who know SIXX, StOMP can be seen as a binary SIXX. While SIXX represents object data as XML, StOMP uses MessagePack. By combining the flexibility of SIXX with the compactness of MessagePack, StOMP aims to be a unique, next-generation portable serializer for Smalltalk. Features: - Implementation is compact and portable - Shared/circular references support - "Class shape changes" support - Data is interchangable between Smalltalk dialects - Good performance for small sized object graph StOMP is now available for Squeak, Pharo, and VisualWorks. There is ConfigurationOfStOMP, so the installation is easy. Gofer new squeaksource: 'MetacelloRepository'; package: 'ConfigurationOfStOMP'; load. (Smalltalk at: #ConfigurationOfStOMP) perform: #load. Enjoy! -- [:masashi | ^umezawa]