Zamzar - Free conversion online of many type of documents (images, text, video, audio...
Wondershare PDFelement - All-in-one PDF editor
Online Convert - Convert files like images, video, documents, audio and more to other formats with this free and fast online converter.
Foxit PhantomPDF - Edit PDF files with our feature-rich PDF Editor. Download Foxit PDF Editor to convert, sign, scan / OCR & more. A speedy PDF Editor alternative to Adobe Acrobat.
Convertio - File Conversion in the Cloud
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.