Walkabout Workplace - Walkabout is a virtual online workplace that brings together your remote and distributed teams...
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Teamflow - Feel like a team again with your own virtual office
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
Perceptyx - Imagine a people analytics platform that allows you to truly listen to your employees, discover the immediate insights you need, and empower your organization to thrive.
Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.