Alternatives to Montastic

HetrixTools suits individuals and teams that need uptime, server, blacklist, domain, SSL, or nameserver monitoring.

openstatus

Openstatus suits teams that need uptime checks and status pages, especially those wanting CLI, API, or Terraform management or the option to self-host.

elmah.io is for .NET developers who need error logging alongside uptime monitoring, deployment tracking, or service heartbeats.

SolidPing

SolidPing suits teams that need uptime checks, alert routing, on-call workflows and public status pages.

Checkmate

Checkmate suits homelabs, SaaS founders, agencies, sysadmins and DevOps teams, e-commerce operators, and open-source maintainers who want self-hosted monitoring.

It suits individuals monitoring one website as well as webmasters needing multiple hosts or faster checks.

UptimeRobot

The free tier suits hobby and nonprofit projects that need up to 50 monitors and can use five-minute checks.

Kuvasz Uptime suits teams that can operate Linux or another self-hosted deployment and need varied monitoring and alert channels.

Better Uptime

It suits people who need website or server monitoring with incident response and status-page tools.

Uptimia

Uptimia suits site owners, SaaS teams, e-commerce operators, and hosting providers needing uptime and service monitoring.

Uptrends

Core is described for teams needing regional availability and performance monitoring, while Pro is aimed at SRE and Ops teams.

Spectate is aimed at freelancers, small and medium-sized businesses, and enterprises, including agencies, startups, SaaS companies, and indie hackers.

StatusBot suits software teams looking to combine website monitoring with task, bug and release tracking.

WebGazer suits people who need uptime checks for websites, APIs, servers, or cron jobs, with a choice of alert channels and public status pages.