libreoffice, 
Look! A #LibreOffice feature you may not know about 😉 When exporting a #PDF the "Hybrid PDF" option embeds the original file. Then anyone with a PDF reader can view the file – and LibreOffice users can edit it too: https://wiki.documentfoundation.org/Faq/Writer/PDF_Hybrid#What_is_a_hybrid_PDF_file? #foss #OpenSource
