Monitor the Performance of Your Websites and Web Applications

  • Get Alerted to Performance Bottlenecks
  • Monitor Around The Globe, 24x7
  • Use Real Browsers, Simulating Real Users
  • Optimize User Experience

Website and web apps are getting richer in order to deliver excellent end user experience. Every second of delay in loading web pages can cost businesses thousands of dollars in revenue every year. Poorly performing websites or web apps result in increased abandonment, lowered customer satisfaction and negative branding. AlertSite provides a number of capabilities so that you can deliver websites and web apps that are up and running 24x7 and find issues that effect your end users before they do.

Code Free Monitoring, Only A Few Clicks Away

Find and Fix Issues Before They Impact Your Users

Monitoring all the Time, Even When your Users are Asleep

340+ monitoring nodes provide a view of your performance anywhere you need. The network is independent, operational 24×7, providing a complete picture of the state of your web applications and web sites at all times.

Use Real Browsers for Browser Based Transaction Monitoring

Record and Playback complex user transactions to simulate a user from real browsers. Monitor application performance from the end user's perspective. Get comprehensive information on user experience. Understand user experience and improve your website or web application.

Finding the Problem Shouldn't be like Finding a Needle in a Haystack

Knowing there's a problem is only half of the battle. AlertSite shows you where the problem lies – is it your code or a third party? Integration with leading deep dive APM tools brings you to the application code.

Monitor Complex User Transactions or Simple URLs

Creating synthetic monitors with AlertSite is intuitive and quick. You can setup simple availability monitors by simply entering the URLs. Or create real browser transaction monitors that access your website using Chrome, Firefox, or Internet Explorer, similar to the way a real user would do it. AlertSite's web recorder DéjàClick allows recording user transactions and creating monitors with the recorded script without needing any complex coding.

Get Started

No coding. Fast deployment.

Deploying AlertSite and creating monitors is intuitive and almost instantaneous. Provide URLs to create availability monitors or use our web recorder DejaClick to create sophisticated transaction monitors. Select browsers, devices and record complex user transactions in real time. Turn the recorded script into monitors and immediately start seeing value. Even reuse functional tests from API testing tools like Ready! API and SoapUI to create advanced API monitors.

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Ensure Excellent User Experience

AlertSite monitors your websites and web applications at the real browser level, where all the dynamic components of your applications come together. Real-browser monitors collect additional metrics that reflect web page load time from the user’s point of view, such as the time when the browser starts rendering the page. These metrics help you understand what your website users are actually experiencing in real time, and not just the network activities that are happening in the background.

Get Insights Into the Actual User Behavior

These measurements of the time it takes for a page and the objects on it to load in the top third of the page (above the fold) can only be obtained using a real browser. Perceived user experience metrics tell you what the user experience feels like – when someone comes to a page if the top of the page loads first then what they see loads fast. Captured screen shots show what the page looks like to a user at each milestone.

Integrations That Work Well With Others

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Fastest Alerting on the Planet

AlertSite's advanced alerting and reporting mechanism helps you get instant actionable insights from your monitoring data. Our alerts are the fastest - sent directly from the monitoring nodes - and the most intelligent - customizable recipients, routing paths and notification methods. AlertSite integrates with leading incident management and operational intelligence platforms to help you resolve issues faster and get real time visibility into business and IT metrics.

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Expect More From Your Web Monitoring Tool

  • Migration experts ready to help switch you from your current vendor
  • Effortlessly Migrate or rescript your current tests in AlertSite
  • Free onboarding and training to help you get up and running in no time

Value for Money

  • Easy to deploy
  • Easy to use
  • No coding required
  • Fastest Time to Value
  • Premium synthetic monitoring for less

Premium Synthetic Monitoring

  • Unified platform to proactively ensure API and application health
  • Find and Fix performance issues before they impact your users and business
  • Fastest Alerting on the Planet

Active Partnerships

  • Make AlertSite your performance partner
  • Be part of our Customer Advisory Board and make your voice heard
  • Excellent support and customer success advisors to help you become an AlertSite pro

Ecosystem Friendly

Seamlessly integrates with all of your NOC essentials:

  • AppDynamics
  • PagerDuty
  • Splunk
  • Perfecto Mobile
  • Ready! API
AlertSite ResourcesSee More...

Revelex Success

Explore how Revelex, a developer of innovative travel technology solutions, relies on AlertSite to support client SLA data and identify and repair client application performance issues before they surface

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Guide to API Monitoring

Most of us can now say that we have built our web applications on a foundation of APIs, both internal and external. With so much emphasis on the tiny API, it’s important to recognize its inherent power

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Why Monitor With AlertSite

Your web and mobile business needs uninterrupted service 24/7. Slow webpage load times mean lost revenue and dissatisfied customers.

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Alertsite Shines Bright for LunaWarehouse. LunaWarehouse is a commercial and residential lighting retailer that conducts the majority of its business online.

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Ready to Try AlertSite?
Questions? Email us at or call: U.S. +1 617-684-2600, EMEA +353 91-398300