# Top Free Website Monitoring Software ## How Many Website Monitoring Software Products Does G2 Track? **Total Products under this Category:** 244 ### Category Stats (Jul 2026) - **Average Rating:** 4.57/5 (↑0.01 vs Jun 2026) The average rating of products in this category, based on all submitted ratings - **Top Trending Product:** UptimeObserver (+1.75%) - Among all products in this category, UptimeObserver recorded the largest rating increase compared to last month _Last updated: July 25, 2026_ ## How Does G2 Rank Website Monitoring Software Products? **Why You Can Trust G2's Software Rankings:** - 30 Analysts and Data Experts - 8,800+ Authentic Reviews - 244+ Products - Unbiased Rankings G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category. ## G2 Grid® for Website Monitoring Software ![G2 Grid® for Website Monitoring Software plotting products by satisfaction and market presence](https://www.g2.com/categories/website-monitoring/grids.png?focus%5B%5D=13665&focus%5B%5D=5346&focus%5B%5D=70896&focus%5B%5D=3824&focus%5B%5D=27540&focus%5B%5D=124535&focus%5B%5D=1242114&focus%5B%5D=2056) Highlighted products: Site24x7, UptimeRobot, Uptime.com, Datadog, IBM Instana, Better Stack, Pulsetic, and Dynatrace. Underlying data: [Grid® JSON](https://www.g2.com/categories/website-monitoring/grids.json?focus%5B%5D=site24x7&focus%5B%5D=uptimerobot&focus%5B%5D=uptime-com&focus%5B%5D=datadog&focus%5B%5D=ibm-instana&focus%5B%5D=better-stack&focus%5B%5D=pulsetic&focus%5B%5D=dynatrace) **Sponsored** ### Dotcom-Monitor Dotcom-Monitor is a synthetic monitoring platform built around web application monitoring, using real-browser testing to confirm that websites, web applications, and APIs work correctly for actual users. Founded in 1998 and based in Minnesota, it runs checks continuously from more than 30 locations across 6 continents, combining outside-in visibility with private, behind-the-firewall monitoring in one platform. Web application monitoring is the core. The EveryStep Web Recorder captures multi-step user journeys without coding, so teams can monitor login, search, cart, and checkout flows the way customers experience them. Scripts run in real browsers with full JavaScript rendering, validating dynamic content and single-page applications, not just whether a home page responds. Page-load waterfalls, element-level timing, and performance reports show where a transaction slows down or breaks, and screenshots and video capture the exact failure for faster diagnosis. API monitoring covers REST, SOAP, and GraphQL endpoints, along with imported Postman and Insomnia collections. Multi-step API workflows chain requests and pass dynamic data between calls, while response checks validate JSON and XML payloads using JSONPath and XPath. Authenticated monitoring supports OAuth 2.0, JWT, API keys, Basic Auth, mTLS, AWS Signature, NTLM, and Kerberos, so protected and production-grade APIs can be tested end to end. Monitoring can also be created and controlled through a REST API, so checks run inside CI/CD pipelines and gate releases before deployment. Server, infrastructure, and network monitoring round out the platform. Checks cover HTTP and HTTPS, DNS resolution and record validation, SSL certificate validity and expiration, email services (SMTP, POP3, IMAP), FTP and FTPS, TCP ports, WebSocket connections, SIP and VoIP systems, and streaming media. Uptime monitoring verifies availability from multiple locations and confirms failures from more than one site before alerting, which reduces false positives. Private Agents extend the same checks inside data centers, private networks, and staging or pre-production environments, so internal applications and services behind the firewall receive the same coverage as public endpoints, using outbound HTTPS without inbound firewall changes. Results surface in real-time dashboards, historical performance reports, and waterfall charts, and alerts route to Slack, Microsoft Teams, PagerDuty, Opsgenie, ServiceNow, VictorOps, xMatters, email, SMS, phone, and webhooks. Escalation policies, on-call schedules, and maintenance windows keep notifications targeted, and acknowledgment and resolution tracking keep incident state clear. Common use cases include verifying login and authentication, validating e-commerce checkout and payment flows, tracking SaaS application performance, monitoring API endpoints against service-level targets, preventing SSL certificate expirations, and detecting DNS resolution problems early. The platform is often run as a primary synthetic monitoring system and as a complement to observability tools, confirming that applications behave correctly from the end-user perspective rather than only that infrastructure is healthy. Dotcom-Monitor serves DevOps, site reliability, platform, and IT operations teams, along with QA and web engineers, at organizations of all sizes. It is used across e-commerce and retail, financial services and fintech, SaaS and cloud platforms, healthcare and telemedicine, media and entertainment, and government and the public sector, wherever reliable validation of application performance and availability across complex user workflows matters. By combining real-browser web application monitoring, API monitoring, and infrastructure monitoring with both public and private deployment options, the platform gives teams a single view of how their digital services behave for users around the world [Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list&secure%5Bcategory_id%5D=1688&secure%5Bchosen_at%5D=2026-07-28T12%3A53%3A18Z&secure%5Bdisplayable_resource_id%5D=1688&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=page_category&secure%5Bplacement_resource_ids%5D%5B%5D=1688&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=5721&secure%5Bresource_id%5D=1688&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Fwebsite-monitoring%2Ffree&secure%5Btoken%5D=b0e21a9eab9cab5871bdccd3f47d0c8d440403f41edc8083b9e4f4f71fed31a1&secure%5Burl%5D=https%3A%2F%2Fwww2.dotcom-monitor.com%2Flanding.aspx%3Fse%3D81ca900f8a654927a8462bbd232c0974&secure%5Burl_type%5D=custom_url) [ Site24x7 ](https://www.g2.com/products/site24x7/reviews) By [Zoho](https://www.g2.com/sellers/zoho-b00ca9d5-bca8-41b5-a8ad-275480841704) [ 4.6/5(441) ](https://www.g2.com/products/site24x7/reviews) What do users say? Users consistently praise the product for its ease of use and reliable alerts, which help them monitor their systems effectively. The intuitive interface and comprehensive monitoring capabilities allo Pros and Cons [ Ease of Use (72) ](https://www.g2.com/products/site24x7/reviews?qs=pros-and-cons)[ Alert Issues (22) ](https://www.g2.com/products/site24x7/reviews?qs=pros-and-cons) [ Datadog ](https://www.g2.com/products/datadog/reviews) By [Datadog](https://www.g2.com/sellers/datadog) [ 4.4/5(726) ](https://www.g2.com/products/datadog/reviews) What do users say? Users consistently praise real-time monitoring and the intuitive dashboards that simplify tracking application performance and infrastructure health. The platform's ability to consolidate logs, metric Pros and Cons [ Ease of Use (145) ](https://www.g2.com/products/datadog/reviews?qs=pros-and-cons)[ Expensive (92) ](https://www.g2.com/products/datadog/reviews?qs=pros-and-cons) [ Better Stack ](https://www.g2.com/products/better-stack/reviews) By [Better Stack](https://www.g2.com/sellers/better-stack-3c077b8c-37c5-4d79-9e19-15cf3bd1960b) [ 4.8/5(331) ](https://www.g2.com/products/better-stack/reviews) What do users say? Users consistently praise the ease of use and intuitive interface of Better Stack, highlighting how quickly they can set up monitoring and receive real-time alerts. The platform's ability to centraliz Pros and Cons [ Ease of Use (118) ](https://www.g2.com/products/better-stack/reviews?qs=pros-and-cons)[ Expensive (22) ](https://www.g2.com/products/better-stack/reviews?qs=pros-and-cons) [ IBM Instana ](https://www.g2.com/products/ibm-instana/reviews) By [IBM](https://www.g2.com/sellers/ibm) [ 4.4/5(480) ](https://www.g2.com/products/ibm-instana/reviews) What do users say? Users consistently praise IBM Instana for its real-time monitoring and automatic service discovery, which significantly reduce setup time and enhance visibility into complex environments. The tool's a Pros and Cons [ Ease of Use (126) ](https://www.g2.com/products/ibm-instana/reviews?qs=pros-and-cons)[ Expensive (43) ](https://www.g2.com/products/ibm-instana/reviews?qs=pros-and-cons) [ Pulsetic ](https://www.g2.com/products/pulsetic/reviews) By [Pulsetic](https://www.g2.com/sellers/pulsetic) [ 4.8/5(208) ](https://www.g2.com/products/pulsetic/reviews) What do users say? Users consistently praise the ease of use and reliable monitoring provided by Pulsetic, highlighting its intuitive interface and quick setup process. Many appreciate the immediate alerts for downtime, Pros and Cons [ Ease of Use (40) ](https://www.g2.com/products/pulsetic/reviews?qs=pros-and-cons)[ Limitations (5) ](https://www.g2.com/products/pulsetic/reviews?qs=pros-and-cons) [ Dynatrace ](https://www.g2.com/products/dynatrace/reviews) By [Dynatrace](https://www.g2.com/sellers/dynatrace) [ 4.5/5(1,366) ](https://www.g2.com/products/dynatrace/reviews) What do users say? Users consistently praise Dynatrace for its AI-driven insights and ease of deployment, which streamline monitoring and troubleshooting across complex environments. The platform's ability to provide co Pros and Cons [ Ease of Use (84) ](https://www.g2.com/products/dynatrace/reviews?qs=pros-and-cons)[ Learning Curve (43) ](https://www.g2.com/products/dynatrace/reviews?qs=pros-and-cons) [ Sentry ](https://www.g2.com/products/sentry/reviews) By [Sentry](https://www.g2.com/sellers/sentry) [ 4.5/5(220) ](https://www.g2.com/products/sentry/reviews) What do users say? Users consistently praise Sentry for its real-time error tracking and detailed stack traces, which significantly streamline the debugging process. The ability to quickly identify and fix issues before Pros and Cons [ Ease of Use (21) ](https://www.g2.com/products/sentry/reviews?qs=pros-and-cons)[ Pricing Issues (7) ](https://www.g2.com/products/sentry/reviews?qs=pros-and-cons) [ Checkmk ](https://www.g2.com/products/checkmk/reviews) By [Checkmk](https://www.g2.com/sellers/checkmk) [ 4.7/5(305) ](https://www.g2.com/products/checkmk/reviews) What do users say? Users consistently praise Checkmk for its flexibility and ease of use, allowing for comprehensive monitoring across various IT infrastructures. The ability to create custom checks and dashboards enhan Pros and Cons [ Ease of Use (26) ](https://www.g2.com/products/checkmk/reviews?qs=pros-and-cons)[ Learning Curve (17) ](https://www.g2.com/products/checkmk/reviews?qs=pros-and-cons) [ Xurrent IMR ](https://www.g2.com/products/xurrent-imr/reviews) By [Xurrent](https://www.g2.com/sellers/xurrent) [ 4.5/5(191) ](https://www.g2.com/products/xurrent-imr/reviews) What do users say? Users consistently praise the intuitive interface and quick alerting capabilities of Xurrent IMR, highlighting its ease of use and seamless integration with existing tools. Many appreciate the platfor Pros and Cons [ Ease of Use (50) ](https://www.g2.com/products/xurrent-imr/reviews?qs=pros-and-cons)[ Missing Features (12) ](https://www.g2.com/products/xurrent-imr/reviews?qs=pros-and-cons) [ LogicMonitor ](https://www.g2.com/products/logicmonitor/reviews) By [LogicMonitor](https://www.g2.com/sellers/logicmonitor) [ 4.5/5(644) ](https://www.g2.com/products/logicmonitor/reviews) What do users say? Users consistently praise the product for its comprehensive monitoring capabilities and ease of use, allowing for quick deployment and effective oversight of IT infrastructure. The platform's ability Pros and Cons [ Ease of Use (20) ](https://www.g2.com/products/logicmonitor/reviews?qs=pros-and-cons)[ Learning Curve (9) ](https://www.g2.com/products/logicmonitor/reviews?qs=pros-and-cons) [ Dash0 ](https://www.g2.com/products/dash0/reviews) By [Dash0](https://www.g2.com/sellers/dash0-d8c455c3-cd78-4a96-904e-add5fd91946b) [ 4.8/5(43) ](https://www.g2.com/products/dash0/reviews) What do users say? Users consistently praise Dash0 for its ease of use and responsive support, highlighting how the platform's OpenTelemetry integration simplifies setup and data management. The intuitive interface allo Pros and Cons [ Ease of Use (30) ](https://www.g2.com/products/dash0/reviews?qs=pros-and-cons)[ Limited Features (10) ](https://www.g2.com/products/dash0/reviews?qs=pros-and-cons) [ Robotalp ](https://www.g2.com/products/mantiksal-robotalp/reviews) By [Mantiksal](https://www.g2.com/sellers/mantiksal) [ 4.8/5(55) ](https://www.g2.com/products/mantiksal-robotalp/reviews) What do users say? Users consistently praise the ease of use and comprehensive monitoring capabilities of Robotalp, highlighting its intuitive setup and real-time alerts that help maintain website uptime. Many appreciat Pros and Cons [ Easy Setup (9) ](https://www.g2.com/products/mantiksal-robotalp/reviews?qs=pros-and-cons)[ Connectivity Issues (2) ](https://www.g2.com/products/mantiksal-robotalp/reviews?qs=pros-and-cons) [ Dotcom-Monitor ](https://www.g2.com/products/dotcom-monitor/reviews) By [Dotcom-Monitor LoadView](https://www.g2.com/sellers/dotcom-monitor-loadview) [ 4.5/5(32) ](https://www.g2.com/products/dotcom-monitor/reviews) What do users say? Users consistently praise the ease of use and comprehensive monitoring capabilities of Dotcom-Monitor, highlighting its intuitive interface and detailed reporting features that help identify performan Pros and Cons [ Ease of Use (1) ](https://www.g2.com/products/dotcom-monitor/reviews?qs=pros-and-cons) [ Checkly ](https://www.g2.com/products/checkly/reviews) By [Checkly](https://www.g2.com/sellers/checkly) [ 4.6/5(33) ](https://www.g2.com/products/checkly/reviews) What do users say? Users consistently praise Checkly for its ease of use and reliable monitoring, making it a valuable tool for integrating testing into CI/CD workflows. The ability to write tests in code and receive re Pros and Cons [ Easy Integrations (5) ](https://www.g2.com/products/checkly/reviews?qs=pros-and-cons)[ Expensive (3) ](https://www.g2.com/products/checkly/reviews?qs=pros-and-cons) [ Noibu ](https://www.g2.com/products/noibu-noibu/reviews) By [Noibu](https://www.g2.com/sellers/noibu) [ 4.6/5(53) ](https://www.g2.com/products/noibu-noibu/reviews) What do users say? Users consistently praise Noibu for its user-friendly dashboard and the ability to prioritize revenue-impacting issues, which helps teams quickly address critical bugs. The platform's effective suppor Pros and Cons [ Customer Focused (1) ](https://www.g2.com/products/noibu-noibu/reviews?qs=pros-and-cons)[ Limitations (1) ](https://www.g2.com/products/noibu-noibu/reviews?qs=pros-and-cons) - ‹ Prev‹ Prev - 1 - [2](/categories/website-monitoring/free?order=g2_score&page=2#product-list) - [3](/categories/website-monitoring/free?order=g2_score&page=3#product-list) - [4](/categories/website-monitoring/free?order=g2_score&page=4#product-list) - [5](/categories/website-monitoring/free?order=g2_score&page=5#product-list) - [6](/categories/website-monitoring/free?order=g2_score&page=6#product-list) - [Next ›Next ›](/categories/website-monitoring/free?order=g2_score&page=2#product-list) Spotlight Categories [Online Reputation Management Software](https://www.g2.com/categories/online-reputation-management) [Payment Processing Software](https://www.g2.com/categories/payment-processing) [Sales Intelligence Software](https://www.g2.com/categories/sales-intelligence) [Sales Enablement Software](https://www.g2.com/categories/sales-enablement) [Data Science and Machine Learning Platforms](https://www.g2.com/categories/data-science-and-machine-learning-platforms) Similar Categories - [AI Agent Observability](/categories/ai-agent-observability) - [Application Performance Monitoring (APM)](/categories/application-performance-monitoring-apm) - [Cloud Infrastructure Monitoring](/categories/cloud-infrastructure-monitoring) - [Database Monitoring](/categories/database-monitoring) - [Enterprise Monitoring](/categories/enterprise-monitoring) - [Hardware Monitoring](/categories/hardware-monitoring) - [Log Monitoring](/categories/log-monitoring) - [Network Monitoring](/categories/network-monitoring) - [Observability Pipeline](/categories/observability-pipeline) - [Observability Software](/categories/observability-software) - [Other Monitoring](/categories/other-monitoring) [Browse Website Monitoring Themes](/categories/website-monitoring/themes)