Omnia Retail - Omnia Dynamic Marketing is a leading intelligent bid automation solution that optimizes and automates CPC bids for every marketing channel.

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

OptiMine - Disrupting the Marketing and Advertising Industry via Agile Marketing Attribution, Marketing Mix Modeling & Optimization

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

EmailOctopus - Email marketing for less, via Amazon SES

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.