WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
Cotap - Cotap is a simple, secure mobile messaging app for fast, easy workplace communication.
Prometheus - An open-source systems monitoring and alerting toolkit.