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

SpamTitan - Comprehensive Email Protection. 99.99% Spam Detection. Blocks phishing, viruses, malware and other email threats.

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

Sanebox - SaneBox is a cloud-based service that allows users to filter and manage their emails.

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.

ZeroSpam - Cloud email security & anti-spam solution