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

Junk Email Filter - Junk Email Filter is a front end spam filtering and virus blocking service for email servers.

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

Covideo - Covideo is a Video Email Platform for Businesses that enables companies to communicate quickly and effectively with their customers.

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.

BlueMail - BlueMail is an email management app for Android, iOS, and Windows.