One Call Now - One Call Now's message notification delivers automated phone calls, SMS text messages and emails within moments to any group.
Dialog Messenger - handy and feature-rich enterprise multi-device messenger available for server or cloud – Slack-like, but not Slack-limited
Aware Mobility - Aware Mobility is an SAP Mobile Application that will give you real-time mobile alerts and notifications to make informed decisions faster.
Ripcord - A desktop chat client for Discord and Slack
OnPage - OnPage critical alert and incident management system enables rapid resolution of critical IT, healthcare or IoT incidents through efficient communication.
Ziggs - Smoothly Share Content Between Devices!