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.

Todoist - Todoist is a to-do list that helps you get organized, at work and in life.

MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.

Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.

My Visual Database - Using My Visual Database, you can create databases for invoicing, inventory, CRM, or any specific purpose.

EssentialPIM - EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications.