Sumo - Free tools to grow your email list.

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.

Pure360 - Email Marketing Software and Services

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

ChannelAdvisor - As your partner in e-commerce success, we’re here to help you acquire more customers and land more sales than ever before. We keep our customers growing — and we have the stats to prove it.

Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.