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.
Pusher Beams - Send push notifications programmatically at scale
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.
Pushcut - Smart triggers and notifications that kick off your automation. NEW FEATURE: Turn a dedicated iOS device into your personal Shortcuts and HomeKit automation server! The perfect companion for Shortcuts and HomeKit.
Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.
Engagespot - Engagespot is the easiest way to build your product's multi-channel notification infrastructure. Deliver In-App, Email, Push, SMS, WhatsApp and chat notifications from your app to your users with a single API.