an embeddable spreadsheet for your web application
Sheetster is a web-based spreadsheet editor and viewer. It can import and export the XLS and XLSX file formats and nearly the full range of Excel formula functions are supported. Most basic features are implemented as well as some of the more advanced ones. The user interface is written entirely in JavaScript and its server-side API is pure Java based on the OpenXLS spreadsheet engine. Neither the client nor the server needs Excel or any browser plugins.
Sheetster is primarily intended...
Signet uses iText to stamp watermarks on PDFs. It can be used within an online order fulfillment system to place transaction details (such as the date, or buyer's name and contact info) within a PDF prior to download, to discourage copyright violation.