Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Decide Now - Decide Now is your helping tool or like a virtual assistant that will help you in time of emergency when you need to make important decisions but are unable to make the final judgment.
Matterlist - A Wunderlist alternative that helps to stay focused on Tasks
Ultimate Decision Maker - Ultimate Decision Maker is a free decision making tool with multiple decision making options at one place.
Taskade - Make lists, organize your thoughts, and be inspired to get things done. Taskade is a collaborative space for your tasks.
ProCon - Just like its name ProCon, it is a helper application that gives its users the pro and cons of options that have in their mind.