Cross-Platform Core Libraries
Cross-Platform Core Libraries contain reusable code for other DevExpress .NET assemblies and the eXpress Persistent Objects (XPO) object-relational mapping tool.
eXpress Persistent Objects (XPO)
eXpress Persistent Objects for .NET (or XPO) bridges the gap between relational databases and object oriented software constructs found in custom software. You can use XPO to build applications that are compatible with multiple database systems (MS Access, MS SQL Server, MS SQL Server CE, MS SQL Azure, MySQL, Oracle, PostgreSql, Firebird, PervasiveSQL, VistaDB, SQL Anywhere, Advantage, DB2, SQLite, and Sybase).
DevExpress Data Library
The DevExpress Data Library implements basic functionality for data binding, control skinning, printing, exporting, and functionality that is common to DevExpress products that target different platforms (ASP.NET, ASP.NET MVC, WinForms, and WPF).
DevExpress Pivot Grid Core Library