20 BEST Website Monitoring Tools Open source (Mar 2022)

Website monitoring tools/services help maintain uninterrupted website access, minimize downtime, optimize performance, and functionality to ensure that the site is online and running smoothly 24/7. In case of downtime, they provide alerts by email, phone call, or SMS.

Best Website Monitoring Tools & Software

Following is a handpicked list of Best Website Monitoring Tools, with popular features and website links. The list contains both open source(free) and commercial(paid) website monitoring software.

1) Site24x7

Site24x7 is a SaaS-based all-in-one monitoring solution for DevOps and IT. Site24x7 website monitor tests a website from global locations, helping you measure a site’s performance as well as reduce it’s downtime.

Key Features:

  • Monitor the performance and uptime of websites and other internet services like DNS server, FTP server, REST APIs etc. from 110+ locations worldwide.
  • Record and simulate multi-step user interactions in a real browser and optimize them.
  • Record load time for each static resource on your website.
  • Monitor SSL/TLS certificates, website defacement etc. and secure your website.
  • Get instant alerts via email, SMS or phone call.

More Information >>

2) Fluxguard

Fluxguard provides next generation uptime and defacement monitoring. Engineered for the US military, Fluxguard’s multi-vector downtime protection alerts you to breaking changes to content, code, and design.


  • Detects downtime with a full Chrome browser that loads all images, Javascript, CSS
  • Monitors and alerts changes to HTML, text, APIs, network activity
  • Multiple screenshot comparisons detect pixel-level changes
  • Google Lighthouse audits look for performance issues
  • Network change detection spots PII exfiltration
  • Sequence multi-step, multi-page synthetic transactions to detect errors in registration, cart, login flow
  • Machine Learning provides advanced defacement protection

More Information >>

3) ManageEngine Applications Manager

ManageEngine Applications Manager enables you to monitor & track all aspects affecting the performance of websites. It provides four different monitors (URL monitor, URL Sequence Monitor, Website Content Monitor, and Real Browser Monitor) for dynamic monitoring of websites.


  • Monitor the performance of a single webpage or sequence of webpages.
  • Monitor critical page workflows and test applications before launch.
  • Track unauthorized content changes.
  • Simulate & analyze end user experience and measure website performance from multiple locations.
  • Identify and resolve issues faster with automated application discovery, tracing and diagnostics(ADTD).
  • Anticipate future resource utilization and growth with machine learning enabled analytics.

More Information >>

4) Sematext

Sematext offers a real user monitoring (RUM) solution, Sematext Experience, and a synthetic monitoring tool, Synthetics that provide end-to-end visibility for faster troubleshooting and optimal user experience.


  • A unified location for all your logs, metrics, and events
  • Identify resources & requests with the biggest negative impact on your website performance
  • Real-time alerts and debugging solutions
  • Support for all major frameworks
  • Very well documented features

More Information >>

5) Datadog

Get immediate insight into your website performance with Datadog Real User Monitoring and Synthetic Monitoring.


  • Proactively resolve issues before any users are impacted with fully hosted, automated tests for critical business transactions and user journeys.
  • Identify user behavior and product usage insights with customizable dashboards.
  • Minimize alert fatigue and false-positives with machine-learning powered alerts.
  • Spend more time focused on building features rather than fixing brittle tests with self-maintaining browser tests.
  • Easily understand if user-facing incidents are due to frontend or backend errors.

More Information >>

6) Web Performance Monitor

Web Performance Monitor by Solarwinds helps you troubleshoot internal and external app performance issues from a single dashboard. You can use this tool to customize the web-based performance dashboards, charts, and views.


  • You can monitor performance from multiple locations.
  • It provides a detailed load-time report.
  • You will get complete website performance monitoring for better visibility.
  • It offers a browser-related transaction recorder.
  • You can track any website or app inside or outside the firewall.
  • It enables you to monitor synthetic transactions continuously

More Information >>

7) Paessler Website Monitoring

Paessler Website Monitoring is a tool that can monitor the availability of site 365 per year. This application can check the load time of your website.


  • It ensures that your website run smoothly with no hassle.
  • This application can monitor more than one URLs with ease.
  • It has built in alarm.
  • Paessler can analyze website up time.
  • It can monitor mail, database, and mail server.

More Information >>

8) StatusCake

StatusCake is a website uptime monitoring tool that sends instant alerts when a user’s website goes down. It can also provide alerts when any technical problem like being slow to load found.


  • You can test website availability from over 28 countries.
  • Provide domain and server monitoring services.
  • It analyzes the speed at which your website loads.
  • You can renew your certificate using SSL monitoring of StatusCake.
  • It ensures that the website is not infected with viruses, trojans, or any other threats.
  • You will receive a detailed report in email.
  • It has website testing locations in 48 places.

More Information >>

9) Updown

Updown is an online uptime monitoring tool that checks website status periodically by sending an HTTP request to any URL. If the website is not responding correctly, then it notifies you by SMS or email.


  • It offers multilingual supports.
  • Updown provides API to build a custom integration.
  • It conforms to the downtime from a range of locations.
  • This software matches the presence of string instead of HTTP status.
  • You will receive alerts for expiring soon or invalid certificates.

More Information >>

10) Pingdom

Pingdom is a website uptime monitoring tool that is dedicated to making the web faster and more reliable. With the help of this tool, customers get alerted about any issue so that they can focus on their daily business.


  • It examines all parts of a web page
  • This software provides a performance overview.
  • You can trace your performance history
  • It allows you to test from multiple locations.
  • It can track and analyze the load time of website critical pages.
  • You can filter out false alters.
  • Pingdom provides REST API integration.

More Information >>

11) Uptime

Uptime is software that checks whether your website is down or not. This software will give you an alert by email, phone call, or SMS if your website is down. It checks your website availability from 30+ different locations spread across six continents.


  • It provides detailed server report time daily, weekly, or monthly.
  • It checks the website for the virus.
  • This software has the capability to monitor HTTP(s), API, TCP, DNS, and real user monitoring.
  • You can develop a custom app or develop an app from our list of projects.
  • It provides a range of integration, including Twitter and slack.

Link: https://uptime.com

12) SmartBear

SmartBear is a tool for application performance monitoring, software testing and API management, and software development. It has a network of 350+ private monitoring options.


  • It detects performance anomalies for websites or web applications.
  • This tool helps you to analyze multi-step API transactions without writing code.
  • It monitors and reports on SLA (Service-Level Agreement) requirements.
  • Provides mobile monitoring for checking the performance of web apps, responsive design, and mobile-enabled sites.
  • It enhances mobility by monitoring cloud-based applications.

Link: https://smartbear.com/product/alertsite/overview/

13) Uptrends

Uptrends is an uptime monitoring tool to control the performance, uptime, and functionality of your websites, servers, and APIs.


  • The tool supports various protocol technology for website and server monitoring needs including, SMTP, POP3, IMAP, HTTP/HTTPS, FTP, SQL, and MySQL.
  • Automatically sends emails that contain dashboard reports in PDF or excel file to the recipient you have chosen
  • You can monitor your API uptime and set up API calls to cross-check its response data.
  • This online application can also monitor multi-step transactions such as login, search, shopping carts, and forms.
  • It automatically identifies web performance issues in browsers like IE, Chrome, and Firefox.

Link: https://www.uptrends.com

14) Host-Tracker.com

Host Tracker is a comprehensive web monitoring tool that enables you to see a weak and strong website point. This tool also helps you to identify site response time and page speed.


  • You can check the availability of the website from more than 140 locations.
  • It allows you to download the final report in PDF, XML, or CSV format.
  • You can get notification of problems through Skype, email, voice call, or hangouts.
  • This tool can monitor domain and d security certificate expiring.
  • Host-tracker automatically pauses your Google Ads if your website is down.
  • You can check domain or IP is blacklisted or not.

Link: https://www.host-tracker.com

15) Freshworks

Freshworks is a cloud-based solution that can monitor more than 50 URLs from 10 global locations. It gives protection from the false alerts. This tool helps you to get alters without login access.


  • It provides instant downtime alerts.
  • You can communicate the status of your web service and incidents with customers in real time.
  • More than 30 users receive instant weekly reports and downtime alerts.
  • It provides multi-channel notification, including Slack, SMS, Twilio, or Email.
  • This tool can analyze URL, UDP, TCP ports, DNS, etc.
  • Freshworks allows you to add customer troubleshooting instructions for each and every check.

Link: https://www.freshworks.com/website-monitoring/

16) Uptimerobot

Uptime Robot is a software used to monitor websites. It monitors your websites every 5-minute intervals and alerts you if your sites are down.


  • It can check port, ping, and HTTP(s).
  • You can view uptime, downtime as well as response time.
  • It enables you to ignore downtimes
  • You can verify downtime from numerous locations.
  • Uptimerobot enables you to perform monitoring tasks with REST API.
  • This application allows you to share statistics with visitors or teammates.
  • You can specify a period not to get monitored.

Link: https://uptimerobot.com

17) Siteuptime

Siteuptime is a cloud-based application that checks your website from more than 8 different locations. This tool supports multiple server monitoring.


  • It provides a monthly report that can be viewed online anytime through the account control panel.
  • You can monitor FTP, HTTP, POP3, SMTP, and FTP.
  • It has a graphical button icon using which you can display your monitoring uptime on any website.
  • It allows you to change the alert failure limit.
  • You can publically display monitoring statistics.
  • This app allows you to send alerts via email.

Link: https://www.siteuptime.com

18) AppBeat

AppBeat is a tool for monitoring websites and servers. It helps you to see if your services are unresponsive or have any downtime.


  • It checks for a valid HTTP(S) response.
  • This tool provides TLS or SSL monitoring.
  • You can test your email server with POP3, IMAP, or SMTP protocols.
  • It sends a ping request to the server to check that it is working correctly or not.
  • You can check connectivity for port using UDP or TCP protocol.
  • AppBeat analyze domain server entries to see that your addresses are correctly resolved.

Link: https://www.appbeat.io

19) Monitis

Monitis is an application that helps you to optimize your website and avoid system downtimes. It also continually checks the health of your website.


  • It provides real-time reporting
  • This tool monitors web transactions.
  • It can detect and resolve the performance issue of any website.
  • Monitis can analyze server health and network performance.
  • It provides an alert via Twitter, SMS, or Email.
  • This tool supports TCP protocols like SMTP, SIP, HTTP, UDP, etc.

Link: https://www.monitis.com

20) New Relic

New Relic APM is the uptime monitoring DevOps tool. This analytics product helps you to check the performance of the application and provide real time data.


  • Monitor performance of External Services
  • It allows full-stack alerting
  • Organize, visualize, evaluate with in-depth analytics
  • Provide a precise picture of dynamically changing systems.
  • The external service’s dashboard offers charts with response time
  • Create customized queries on metric data and names
  • Principal Transactions monitor feature to manage and track all the critical business or company transactions.

Link: https://www.newrelic.com

21) Appdynamics

AppDynamics is application performance management software. It detects anomalies and keeps your business running smoothly. This software enables you to visualize revenue paths with customer and app experience in order to fix app issues.


  • It allows you to monitor every critical click, swipe, and tap.
  • This tool uses machine learning in order to automate anomaly detection.
  • It provides enterprise-grade security.
  • You can install, configure, administrate, and manage.
  • It can be deployed on-premises or as SaaS.
  • Appdynamics supports public, private, or multi-cloud applications.

Link: https://www.appdynamics.com


❓ What is Uptime monitoring services?

Uptime monitoring services are online applications that help you measure the reliability/availability of a domain, server, website, TCP, DNS, and HTTP(S).

🚀 Which are the Best Website Monitoring Tools?

⚡ Which factors should you consider while selecting a Best Website Monitoring Service?

Don’t slog to choose the right tool. Get smart. Consider the following factors before you decide.

  • Quality of Customer support.
  • License Cost, if applicable
  • In the case of an outsourcing project, you need to factor customer/Client preference of the website monitoring software.
  • The cost involved in training employees on the tool.
  • Hardware/Software requirements of the website monitor tool
  • Consider the security options offered by software providers.
  • Support and Update policy of the web monitoring tool vendor.
  • Reviews of the company.