Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
iTextPDF - iText offers flexible tools for PDF creation, editing and inspection.
Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
Apache PDFBox - The Apache PDFBox™ library is an open source Java tool for working with PDF documents.
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.
IronPDF - SDK for creating and editing PDFs.