Quip - Quip is the modern productivity suite that simplifies your life and helps your team get work done faster.
Mongoku - A neat Web-based GUI for MongoDB
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.
adminMongo - An open source admin user interface for your MongoDB
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.
DBngin - Free all-in-one database version management tool 🛠️