Snippyly - Turn your screen into a collaborative document.
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.
Plutoview - Shared browsing solution for remote group collaboration
Standard Notes - A safe place for your notes, thoughts, and life's work
Miro Remote Meetings and Workshops - Video chat, present, and work together, anytime, anywhere!
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.