Bytescout XLS Viewer is a secure software that allows users to view and print XLS, XLSX, ODS, CSV, and TXT spreadsheets without requiring MS Office or Open Office. It's powered by Bytescout.XLS library and is ideal for .NET developers.

What sets Bytescout XLS Viewer apart from other spreadsheet programs is that it doesn't require you to have MS Office or any other type of spreadsheet software installed. Instead, it's based on the Bytescout.XLS library for .NET (VB, C#, ASP.NET) developers, creating a more seamless viewing experience.
But the benefits don't stop there. With Bytescout XLS Viewer, you can also export your spreadsheets to HTML format, making it even easier to share your data with others.
Overall, if you're looking for a reliable and easy-to-use spreadsheet viewer, Bytescout XLS Viewer is definitely worth checking out.
Version 2.9.0.1677:
improved XLS, XLSX, CSV and ODS support
minor bug-fixes in XLS view functionality
Version 2.8.5.1638:
improved XLS, XLSX, CSV and ODS support
minor bug-fixes in XLS view functionality
Version 2.31:
improved XLS, XLSX, CSV and ODS support
minor bug-fixes in XLS view functionality
Version 2.00:
support for XLSX (Office Excel 2007) added
support for ODS (Open Office Calc) added
minor bug-fixes
Version 1.30:
minor bug-fixes
improved support for XLS documents
Version 1.20:
minor bug-fixes
support for printing added
support for Export As HTML added
Version 1.10:
minor bug-fixes
support for command-line option to open files added (now works with "Open With" as well)