Microsoft Office Access - Access is now much more than a way to create desktop databases. It’s an easy-to-use tool for quickly creating browser-based database applications.
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.
My Visual Database - Using My Visual Database, you can create databases for invoicing, inventory, CRM, or any specific purpose.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.
Slack - A messaging app for teams who see through the Earth!