PDF to Text - Free bulk conversion of PDF documents to plain text files, which can be opened by any text editor.
Tesseract - Tesseract is an optical character recognition engine for various operating systems
Zamzar - Free conversion online of many type of documents (images, text, video, audio...
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.
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.
youconvertit - Youconvertit - Free Online Files Converter, convert any type of file formats, convert media, images, audio, video. All file converted can be shared for free.