es-Builder - es-Builder is a flexible, customizable, friendly, powerful and unique information manager for private personal use.

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

Jell - Helping distributed teams thrive through async daily standups - all in minutes a day.

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

Altova XMLSpy - The XMLSpy XML Editor is a powerful tool for editing XML and related technologies. It is the only XML Editor with patented SmartFix validation, enterprise-grade editors, converters, debuggers, and code generators.

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.