Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.
AudioNotes - Easily record and share audio messages from your Mac menubar
GitJournal - Manage your Notes from any Git Repo.
Padlet - Visual boards for organizing anything.
Quillnote - Take beautiful markdown notes and stay organized with task lists.
Recordify - Quickly send audio messages to Slack!