Quip - Quip is the modern productivity suite that simplifies your life and helps your team get work done faster.
ContentStudio - ContentStudio is a social media management platform to discover engaging content, share on multiple networks and amplify your content marketing.
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.
Xtensio - Xtensio is a flexible platform to create, collaborate, share and present beautiful business documents.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Storymkrs - Plan and evaluate your marketing without sheets