The best Metric Tower alternatives

PRTG is intended for small and medium IT infrastructures, with features for OT and IoT environments.

It suits people who need to monitor websites or infrastructure and receive alerts through a range of channels.

It suits organizations that can operate a Linux server and want to monitor infrastructure under configured thresholds.

TLDTrack is aimed at agencies, branding and marketing studios, SEO consultancies, and web developers monitoring client or business websites.

The maker describes Free as suited to personal projects and small sites, Pro for growing teams, Business for teams needing advanced features, and…

DomainWarn is intended for web agencies, freelancers, web developers and IT service providers managing multiple client domains.

It suits teams monitoring networks across local and remote sites, including environments where the Core cannot directly reach devices.

DNS Check suits people monitoring DNS infrastructure and teams that share DNS update requests with customers.

DNSMonit suits domain administrators, developers, web agencies, and managed service providers tracking DNS portfolios.

DNSai is aimed at IT administrators, cybersecurity analysts, researchers, and operations teams that rely on DNS data.

Checkmate names homelabs, SaaS founders, agencies, sysadmins and DevOps, e-commerce, and open-source maintainers as potential users.

Zabbix suits teams monitoring infrastructure, applications, networks, or services across a range of operating systems and data sources.

ThousandEyes DNS Monitoring suits organizations needing visibility across their own networks and provider networks.