Features:
- Full support for Visual Studio 2005 and .NET Framework 2.0
- Direct formula support in reading and writing
- Direct named ranges support in reading and writing
- Various cell data types (numbers, strings, dates, floating point etc.)
- International characters (Unicode support) and international date/time formats (custom number formatting)
- Cell styles (alignment, font properties, indentation, rotation, borders, shading, protection, text wrapping and shrinking, number formats etc)
- Font formatting (size, color, font type, italic and strikeout properties, different levels of boldness, underlining, subscript and superscript)
- Smart caching for cell styles and font properties removes duplicates in an efficient way so you don't have to worry about breaking the Excel cell style limit
- Multiple worksheets
- Row and column styles, row height and column width
- Row and column grouping and outlining
- Merged regions
- Worksheet and row copying, deletion and insertion
- Performance and feature samples (writing, reading, conversion and templates)
- XLS reading / writing - preserving images, summaries and similar excel objects not directly supported by ExcelLite API
- CSV reading / writing - support for comma, tab, semicolon or any other delimiter
- Horizontal and vertical page breaks, other print properties
- Worksheet Zoom, FirstVisibleRow, ShowGridLines, and other view properties
- Template support - create new workbooks using existing workbook as a template

Most common uses of ExcelLite:
- XLS files reading, writing or modification
- Filling of XLS forms
- CSV files reading or writing
- Conversion of CSV files to XLS files (and other way round)
- Splitting of XLS files into multiple files (and other way round)

You can equally use ExcelLite from your desktop or web applications. ExcelLite is very fast (about 260 times faster than Microsoft Excel object) and with the small memory footprint.