One Call Now - One Call Now's message notification delivers automated phone calls, SMS text messages and emails within moments to any group.
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
Notifuse - A 1-to-many notification API that's simple to use
Process Street - Create beautiful rich process documents in a simple to follow checklist format. Fast, free and incredibly simple to use.
OnPage - OnPage critical alert and incident management system enables rapid resolution of critical IT, healthcare or IoT incidents through efficient communication.
Pipefy - Pipefy is a process management software that empowers anyone to create and automate efficient workflows on their own without code.