Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Apache PDFBox - The Apache PDFBox™ library is an open source Java tool for working with PDF documents.
Adobe Illustrator CC - Adobe Illustrator CC is a commercial vector graphics editor.
iTextPDF - iText offers flexible tools for PDF creation, editing and inspection.
Boxy SVG - Boxy SVG is a vector graphic editor built for the modern web.
IronPDF - SDK for creating and editing PDFs.