Gear5 is described as 'easy-to-use, website-performance monitoring system that will give you comprehensive and understandable performance information to help you speed up your websites'. There are more than 25 alternatives to Gear5, not only websites but also apps for a variety of platforms, including SaaS, Linux, Mac and Windows. The best alternative is Pingdom. It's not free, so if you're looking for a free alternative, you could try New Relic or Pingbreak. Other great sites and apps similar to Gear5 are Curler by Amixr.IO (Free), Up Ninja (Paid), Silent Down (Paid) and Netthrob (Paid).
Unlimited monitors checked from multiple location every minute. Monitor any port or setup a "heartbeat" that works well for cron jobs or any service behind a firewall. Be alerted as soon as your service is offline via email or app integration.
IQLECT is the creator of Ampere, a real-time big data analytics platform. Various apps for data center infrastructure monitoring, clickstream analysis, log analysis and others can be deployed on the platform.
Monitor your website, server, API, application, service and get notified if your resources have some problems with availability. Upzilla notifies you in Slack, Telegram, Messenger, or by email. Works also as a public status page with subscriptions.
UptimePal offers an affordable website monitoring service. For only $1/month per URL, you get 1-minute uptime monitoring, alerting software, & performance test tools - all from a robust worldwide monitoring network.