This WP7.1 StorageHelper assembly is used to serialize classes into XML data for save/load operations, saved to WP7.1 store.

SharpSerializer is an open source XML and binary serializer for .NET Framework, .NET Compact Framework and Silverlight. It was developed with C#. Actually SharpSerializer can serialize to Xml and to its own binary format.

Enough Storage allows you to store and load objects using the DataContractSerializer (XML) or the DataContractJsonSerializer - locally, temporary or roaming.