Spreadsheet Document Automation
Read/Write Microsoft Excel Documents
The DevExpress Office File API ships with a high performance and low memory footprint Spreadsheet Server and includes the following integrated features:

• Microsoft Excel compatibility (XLS, XLSX)
• Medium Trust support
• Create, edit, print and export to PDF documents
• Built-in formula calculation engine
• Create and modify Worksheets
• Manipulate Cells and Cell Ranges
• Pictures
• Charts
• Rows and Columns
• Data Management
• Cell Styles and Formatting
• Table support
• Pivot Tables    

XL Export Library
High-Performance Excel Document Write-Only Library
In contrast to the multi-purpose spreadsheet document generation library - which can load and edit documents and thus needs to create and maintain an in-memory model - the XL Export API is designed for the singular task of generating Excel files by writing them directly to stream. It's blazing fast and optimized for the output of extremely large files.

• Supported Formats (XLSX, XLS, CSV)
• Medium Trust support
• Document Generation
• Cell Formatting
• Page View / Page Setup
• Sparklines

Rich Edit Document Automation    
Read/Write Microsoft Word Documents
The DevExpress RichEdit Document Server is a word processing engine designed to fully automate common word processing requirements and use-case scenarios. It is the non-visual equivalent of the DevExpress RichEdit Control, with complete functionality available via its powerful API. Features include:

• Supported Formats (DOC, DOCX, RTF, ODT, EPUB, MHT, HTML)
• Extended text formatting options
• Comprehensive table support
• Floating objects
• Document protection and end-user restrictions
• Document fields
• Layout API
• Mail merge with master-detail support
• Spell Checking
• Auto Correction

PDF Document Processor
Read, Write, Print and Export PDF Documents
The DevExpress Office File API ships with a high performance and low memory footprint PDF Document Processor and includes the following integrated features:

• Document Creation API
• Form Filling
• Merging or Splitting PDF Documents
• Page Manipulation
• Password Protection
• Signing a Document
• Content Extraction
• Text Search
• Print and Export

And More    

• Barcode Generation Library - With built-in support for over 20 industry standard barcode types, the DevExpress Document Server allows you to easily generate barcode images within your .NET application.
• Zip Compression - The DevExpress Office File API includes a .NET Compression Library that's written with 100% managed code and available in Medium-Trust environments (stream and memory array compression/decompression operations).
• Unit Conversion - This library provides you with a set of extension methods for the System.Double data type. It enables you to easily perform conversion between different units of measurement and to operate with quantity values, i.e. physical values expressed in units of measurement.