Directory: Spreadsheet/table editor

HSSF is the POI Project's pure Java implementation of the Excel '97(-2002) file format.

HSSF provides a way to read spreadsheets create, modify, read and write XLS spreadsheets It provides:

* low level structures for those with special needs
* an eventmodel api for efficient read-only access
* a full usermodel api for creating, reading and modifying XLS files

Web-based data-entry and consolidation of
Excel data with multi-user capability

Transformation of local Excel solutions in
corporate-wide web applications

Ad-Hoc delivery of IT solutions in the inter-
company und intra-company sphere

Excel as Rapid-Development Tool for web applications in Finance, Sales and Controlling

Read Tony Sintes's entire Java/Microsoft Excel series (JavaWorld):

"It's Excel-lent"
"The Java-Excel Solution Revisited"
"It's POI-fect"

SpreadSheet is an excel-like application. It's written in pure dhtml/javascript and works without installation of any plugins, java code etc.

It's a great frontend to edit data that you want to display on a web page. For structured output of data in CVS format see the HTML table classes.