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.
Communifire - Enterprise Social Collaboration Software
Standard Notes - A safe place for your notes, thoughts, and life's work
LS Intranet - LS Intranet is a corporate intranet that facilitates multiple employees collaborating on projects, and working in synergy.
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.
Unily - Unily is a cloud-based intranet solution designed by SharePoint consultancy BrightStarr.