One Call Now vs. Alertus Unified Mass Notification System

One Call Now is one of OnSolve’s market-leading mass notification systems that enables groups and organizations of all sizes and types to send important messages via voice, text, mobile app and email to groups—all through a simple click or call. When you need to get the word out quickly—regarding severe weather, utility outages, school closures and more—One Call Now makes it easy to create and send alerts from anywhere.

When Minutes Matter, We Notify in Seconds Alertus' 20 years of industry experience and best practices have provided thousands of customers with the most comprehensive mass notification solutions on the market. We recognize each environment is as unique as our customers, so we pride ourselves on covering a wide range of capabilities to accommodate an organization's specific needs. We offer an extensive breadth of emergency notification solutions — both hardware and software — for emergency and routine communication.