IronPDF - SDK for creating and editing PDFs.
LibreOffice - Writer - Open-source cross-platform word processor.
PDF to X - PDF to X is used to convert PDF documents to Word (.doc)/WordPad (.rtf) documents, HTML web pages, JPG/PNG/BMP/TIF/GIF/PCX/TGA images and plain text files in batch mode. It works without Adobe Acrobat or Adobe Reader.
Microsoft Word - Microsoft Word is a commercial word document processor for Windows.
Apache PDFBox - The Apache PDFBox™ library is an open source Java tool for working with PDF documents.
Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.