Doing responsive design? For quick prototyping, this spreadsheet is a godsend: http://ift.tt/1zh8l2f
Style Guides & Design Patterns
Create a new spreadsheet and edit with others at the same time — from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Sheets to edit Excel files. Free from Google.
more @ http://ift.tt/1F2mI16