Downhound provides outage information for over 14,000 websites, apps, games & internet providers.

PingPing is described as 'Get notified by the simplest uptime monitoring service in the world, when your website is down or your certificate becomes invalid. No more, no less' and is a website monitoring tool in the network & admin category. There are more than 50 alternatives to PingPing for a variety of platforms, including Web-based, SaaS, Self-Hosted, iPhone and iPad apps. The best PingPing alternative is Uptime Kuma, which is both free and Open Source. Other great apps like PingPing are Better Stack, UptimeRobot, Pingdom and StatusCake.
Downhound provides outage information for over 14,000 websites, apps, games & internet providers.

StablePing is a fully managed uptime monitoring service for just $3.95/month. Whenever your website goes down, their system will alert you within seconds via email or SMS (and they'll work with you to get it back online).
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.

TLS Checker is a Free TLS / SSL Expiry Monitoring Service which includes Discovery, Inventory and Management of certificates. For Free.



Native iOS, iPadOS and watchOS app for monitoring and controlling self-hosted homelab services, with no backend, account, or telemetry.




Semonto is an uptime monitoring app that allows you to keep an eye on your websites, servers and apps 24/7. Get notified when something goes wrong so that you can fix it before anyone notices.




Ultralight open source server monitoring agent, written in Rust. Ships CPU, RAM, disk and network metrics over OTLP to any compatible backend.
Centralizes real-time monitoring of servers, containers, Kubernetes clusters, SNMP devices, firewalls, storage, and databases in a user-friendly dashboard with alerts, multi-user support, setup wizard, REST API, customizations, mobile access, and backup options.

Server Monitoring and Down Alerts made easy! WIndows, Linux & macOS Monitor servers easily and receive alerts on CPU, RAM or downtime.

CertWatch is a self-hosted TLS monitor that ships as a single Go binary with SQLite - no database server, no agents, no telemetry.

StatusDrop is an embeddable status widget and hosted status page for SaaS applications. Add a single script tag to your site to show real-time status of 550+ third-party services like Stripe, AWS, Vercel, Cloudflare, and more.
