What are some alternatives?
When comparing Word Online and Mightytext, you can also consider the following products
Apache OpenOffice Writer - Open-source word processor of the Apache OpenOffice suite.
Pamela for Skype - A versatile and easy to use Skype audio and video recording software. Features
Google Drive - 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.
Zeplin - Collaboration app for UI designers & frontend developers
LibreOffice - Writer - Open-source cross-platform word processor.
ActiveWords - Other Collaboration