OneNote - Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.
Muzzle - Silence embarrassing notifications while screensharing
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.
Upscope Screen Sharing for Intercom - No-downloads screen sharing fully integrated with Intercom.
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.
Dead Simple Screen Sharing - Simple screen sharing and audio conferencing software.