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Open Source Website Monitoring Software (2026)
Last updated: March 2026
14 software options
Sponsored
Site24x7
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
All-in-one performance monitoring tool for DevOps and IT
Get Started with a 30-day free trial. No Credit Card required. Pricing options are available in Yearly, Monthly and Hourly models. STARTER Best suited for small teams. $9/mo PRO Best suited for medium sized teams. $35/mo ENTERPRISE Best suited for enterprises. $225/mo
Read more about Site24x7
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Performance testing and monitoring
Sign up for free access with our perpetual free tier and 100 GB/month of data ingest included.
Read more about New Relic
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Open source software for IT infrastructure components
Zabbix Cloud is offered across seven pricing plans, starting at $50/month. A 30 free trial is also available. Please contact Zabbix for detaild pricing information.
Read more about Zabbix
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud-based website monitoring software
Oh Dear's pricing is transparent: you simply pay for the amount of websites you want to monitor. All of our plans - the smallest and the biggest - have access to all features and settings. We don't hide any security toggles behind an Enterprise plan. Every user has access to every feature.
Read more about Oh Dear
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
See what your users want—with Clarity
Free tool. Enjoy all the features of Clarity at absolutely zero cost. You'll never run into traffic limits or be forced to upgrade to a paid version.
Read more about Microsoft Clarity
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Take back control with Matomo
Per number of page views.
Read more about Matomo
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Infrastructure & application monitoring software
Choose between five Editions aimed at monitoring any kind of cloud and IT infrastructure. Fine-tune your investment to your scale and support requirements. IT monitoring has never been more flexible.
Read more about Checkmk
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Scalable Application Metrics
We offer everything from small plans for individual developers to gargantuan plans for Fortune 500 companies sending millions of metrics every month. If you're currently running Graphite at scale, we can help - we collect millions of metrics and billions of datapoints a day.
Read more about Hosted Graphite
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Open-source IT infrastructure monitoring & alerting solution
Read more about Nagios Core
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Detect and diagnose crashes in your applications
Startup $29/ month 5 Users 5 Projects 3 months historical data Growth $99/ month 15 Users Infinite Projects 6 months historical data Professional $249/ month 30 Users Infinite Projects 6 months historical data
Read more about BugSnag
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Maximize your conversion with riyo.ai, an all-in-one tool.
Read more about riyo.ai
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Network graphing RRDTool
Cacti is an open source platform, users are encouraged to donate via the website.
Read more about Cacti
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
A WordPress plugin to manage multiple sites from one screen.
The MainWP plugin is 100% FREE, forever! However, MainWP Pro offers a wide range of 30+ premium Extensions at a single price. The extensions aren't required, but they extend the functionality to improve your workflows. During the subscription, you'll get Priority Support, Important security & performance updates for existing extensions, and access to all new extensions. - Monthly: $29/mon - Yearly: $199/year (Saving $149 as compared to monthly) - Lifetime: $499 (One-time)
Read more about MainWP
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
The all-in-one APM for teams of all sizes and scale.
AppSignal plans start at $23 per month, with custom options available for larger teams or specific needs. Every plan includes: - Unlimited apps and hosts - Access to all core features, regardless of plan size - 30-day trace retention for reliable performance insights - 1GB of log storage included, with additional storage available at $10 per 10GB - Expert support included as standard Optional add-ons are available for SAML SSO, long-term log storage, and HIPAA compliance. Save 10% with an annual plan. AppSignal offers simple, predictable pricing that scales with your team.
Read more about AppSignal