Bandizip - Bandizip : All-In-One Free Zip Archiver. Bandizip is a lightweight, fast and free All-In-One Zip Archiver.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
The Unarchiver - Get the top application for archives on Mac. It's a RAR extractor, it allows you to unzip files, and works with dozens of other formats.
Remember The Milk - Remember The Milk is a task and time management application for mobile devices.
WinZip - The world's best file compressor in the world.
Org mode - Org: an Emacs Mode for Notes, Planning, and Authoring