Serialization library (custom text format): https://svn.eiffel.com/eiffelstudio/branches/eth/eve/Src/library/schema_evolution/serializer_lib/ 

GUI: https://svn.eiffel.com/eiffelstudio/branches/eth/eve/Src/Eiffel/interface/new_graphical/schema_evolution_tool/

Docs: https://svn.eiffel.com/eiffelstudio/branches/eth/eve/Src/library/escher/documentation

For opening .webarchive files check http://en.wikipedia.org/wiki/Webarchive