Office documents to PDF in plain Java on Apache PDFBox and Apache POI: Word (DOCX, DOC, RTF, WordML), PowerPoint (PPTX, PPT), Excel (XLSX, XLSB, XLS), OpenDocument and OpenOffice.org 1.x, Visio, iWork, Lotus 1-2-3, dBASE, SYLK, DIF, CSV, TSV and plain text