PDF to Text - Free bulk conversion of PDF documents to plain text files, which can be opened by any text editor.

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.

Tesseract - Tesseract is an optical character recognition engine for various operating systems

Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.

Cisdem PDFtoTextConverter - How to convert native or scanned PDF into nicely formatted Text on Mac? Here we list the best solution for each case, also you can refer to the alternatives to fix this problem.

Wondershare PDFelement - All-in-one PDF editor