Aimtell - Web push notifications for mobile & desktop
Secure Suite - Cloud Email service
OneSignal - Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.
365 Command - Application management solution for MS 365 services
Gravitec.net - Gravitec.net is a smart web push service that lets you boost subscribers through customizable prompts and automatically target your content to the right audience.
ManageEngine M365 Manager Plus - Auditing, monitoring and reporting tool for Office 365