MS SharePoint - Share, organize, and discover information with Microsoft SharePoint. Learn about SharePoint Online, OneDrive for Business, and Apps for SharePoint
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.
Sharepoint Online - SharePoint is a secure place to store, organize, share, and access information from almost any device.
Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.
Confluence - Confluence is content collaboration software that changes how modern teams work
Bitrix24 - Bitrix24 is a free (for small businesses) social enterprise platform. It is a united work space which handles the many aspects of daily operations and tasks. Create your own social intranet in minutes!