From the CompaReview series, here is a feature-by feature tabular comparison of collaboration and task-management solutions.

Including many useful features, like:

• Login via google account
• Real-time sync
• Real-time latency
• Show other user’s position
• Show other user’s text selection
• Show other user’s text cursor position
• Show other user’s editing character-by-character
• Show element’s author
• Show element’s creation date
• Show element’s last modification date
• Show element’s history
• Android client
• Rich-text comments
• Apply rich-text attributes accross nodes
• WYSIWYG Rich-text editor
• CSS / styles
• Tags in text
• Tags assigned to whole nodes
• Threaded (tree) comments
• Notify new messages
• Go to next unread
• Expand/colllapse elements
• Reference another user in text
• Enter into sub-tree
• Instant edit in a given location, without a need to press a button
• List bullets are objects with user-visible metadata
• Rich-text
• Keyboard operation
• Keyboard operation: arrow movement
• Gadgets
• No extraneous rows/columns
• Quickly add row/node
• Natural text editing
• Global undo
• Edits saved automatically, no need to confirm
• Quickly reorder nodes
• Estimate task durations
• Sub-tasks
• Read offline
• Edit offline
• Distributed sync (p2p)

Products included in the comparison:

• Worfklowy
• https://www.bitrix24.com
• Rizzoma
• https://www.co-meeting.com/g/208044826217540#
• https://kune.cc
• Cisco Webex
• https://www.webex.com/
• Asana
• Wiki
• Google Sheets
• Google Docs (Word Processor)
• Google Gmail
• Microsoft Office 365
• Apple Numbers (Web)
• Google Inbox
• FlexAgenda