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12 Best Free and Paid Synthetic Monitoring Tools

Application downtime and errors continue to plague enterprises around the world. As it stands, synthetic monitoring tools are the most efficient way to measure the performance, availability, and reliability of any website or online application. 

Whether you’re a budget-conscious developer or a business owner seeking top-tier monitoring capabilities, we’ve got you covered with a curated list of the 12 best free and paid synthetic monitoring tools.

#1 appNeura

#2 Datadog

#3 Pingdom

#4 Checkly

#5 AlertBot

#6 Uptime

#7 Sematext

#8 Dotcom-Monitor

#9 Uptrends

#10 SolarWinds

#11 Site24x7

#12 SmartBear AlertSite

Let’s dive right in!

1. appNeura


AppNeura’s synthetic monitoring system proactively measures and optimizes the performance and availability of online applications. By simulating user interactions, it helps identify potential issues before they impact end-users, ensuring smooth and effective application operations around the clock.

Main Features

Here are some of the main features of appNeura:

  • Ability to record transactions from any web application or through web access on the browser
  • Simulation of user interaction on online applications from multiple locations
  • Automatic execution of recorded transactions from any location and at a fixed time interval
  • Clutter-free and user-friendly cloud-hosted dashboard
Synthetic Monitoring Tool - appNeura

Credits: appNeura

At the higher level, appNeura enables organizations to collect metrics from synthetic agents. These metrics include rendering time, TCP, third-party calls, and response/processing time. With appNeura, organizations can extract granular details of transactions based on country, region, city, or branch level.


appNeura offers a host of business benefits, including:

  • Enhances the quality of customer experience by identifying the cause of any degradation in application performance.
  • With end-to-end visibility, appNeura enables organizations to detect the factors that are affecting the end-user experience.
  • Visual metrics enable companies to track the user’s perception of every page load.
  • Measures the process workflows right from submitting online forms to user actions.
  • Benchmarks or compares application performance and availability against industry standards and competitor products.

appNeura – Pricing

appNeura comes with a free trial for a limited period. For more information, get in touch here.

2. Datadog 

As a synthetic monitoring tool, Datadog provides end-to-end visibility for testing APIs and browsers. This AI-powered tool enables companies to increase their application uptime and identify regional issues.

Synthetic Monitoring Tool - Datadog

Credits: Datadog

Main Features

Here are some of the main features of Datadog:

  • Web recorder functionality for creating code-free test cases.
  • Automated testing capability to identify problems during off-hours.
  • Sophisticated alert system for alert teams while minimizing false positives.
  • Tracking of SLAs and SLOs.

As a cloud-powered tool, Datadog can monitor website performance from multiple locations around the globe. Additionally, this tool can check DNS servers and SSL certificates.


Datadog offers benefits such as:

  • Sophisticated alert capabilities that notify users of any impending issues
  • Quick monitoring of user journeys that helps in faster troubleshooting  

Datadog – Pros and Cons

Designed for DevOps teams.Holistic view of the application performance & accessibilityReflects real-time changes to networksCan scale up application monitoring with flexible pricingLimited 14-day free trial

Datadog – Pricing

The API Test plan is priced at $5 for 10,000 monthly runs – while the Browser Test plan is priced at $12 for 10,000 monthly runs. 

We’ve compared Datadog to Dynatrace in a recent article.

3. Pingdom

Pingdom synthetic monitoring is a cloud service operating from over 100 global data centers. As a synthetic monitoring tool, Pingdom is widely used to monitor website availability.

Synthetic Monitoring Tool


Main Features

Here are some of the main features of Pingdom:

  • Cloud-based monitoring
  • Over 100 test launch locations
  • Variety of testing methods
  • Performance alerts

As a synthetic monitoring tool, Pingdom can execute a range of tests for examining website load times and transactional performance. Additional features include the “Downtime alerts” that notify your users when the website is inaccessible.


Pingdom offers a host of business benefits, including:

  • Ease of creating a test for synthetic monitoring without any technical knowledge.
  • Beneficial for real-time measurement of website uptime and response time.
  • Subscribers can choose the number and type of monitoring tests to run every month.  

Pingdom – Pros and Cons

External monitoring from over 100 locationsCloud hosting, thus, ensuring no setup complicationCustomized alerts in the form of email, SMS, or through custom solutionsLimited free trial period

Pingdom – Pricing

Pingdom is available with a 14-day free trial version that includes synthetic and real user monitoring. 

Learn the 12 best real user monitoring tools for small businesses.

4. Checkly

With the Checkly monitoring tool, organizations can check and monitor website transaction flows in a browser and monitor the API endpoints. Easy to install and set up, Checkly uses the Chrome Puppeteer framework to simulate transactions on the Chrome browser.

Synthetic Monitoring Tool -


Main Features

Here are some of the main features of the Checkly tool:

  • Displays the application performance and correctness on a single dashboard
  • Support for Chrome Puppeteer framework
  • Support for open-source Puppeteer recorder extension for Chrome browser
  • Powerful REST API to automate checks with Terraform

Checkly is popular for its ease of installation and use. You can also use Checkly to configure alerts for Opsgenie, Pagerduty, and Slack.


Here are a few benefits of the Checkly tool:

  • Ideal for use in a DevOps environment
  • The centralized dashboard provides minute details of your app’s performance and accuracy

Checkly – Pros and Cons

Easy to install and configureExceptional customer supportLack of documentation for reusing code snippets

Checkly – Pricing

Checkly is available with a free plan that includes the 1-minute check interval.

5. AlertBot

Among the leading tools for synthetic monitoring, AlertBot uses web browsers to execute performance testing and identify problem areas. Easy and intuitive, AlertBot can assist its customers in configuring web transaction monitoring.

Synthetic Monitoring Tool


Main Features

Here are some of the main features of AlertBot:

  • Simple and intuitive user interface
  • AlertBot web recorder tool to simulate business processes on any website.
  • Timely alerts about slow websites to the right team
  • Web page monitoring from locations across the world

AlertBot offers a variety of advanced features, such as multi-step synthetic recording and Health Map reports that share website performance metrics via daily emails.


Here are a few benefits of the AlertBot tool:

  • Improves user experience by reducing downtime and identifying bottlenecks
  • Monitors web pages from across the globe

AlertBot – Pros and Cons

Support for monitoring real browsers.Accurate page error screenshotsAlerts on email, text messages, and phone callsPoor website designDelayed alertsBasic website monitoring features

AlertBot – Pricing

Along with a 14-day free trial, AlertBot is priced on monthly and annual terms – along with custom plans.

6. Uptime

Uptime offers synthetic monitoring along with other services, including web asset testing and real user monitoring. With synthetic monitoring, companies can quickly identify any issues in online funnels, forms, and flows.

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Main Features

Here are some of the main features of the Uptime tool:

  • 15 different locations to launch tests from servers
  • Automated synthetic monitoring that automatically matches SLA expectations
  • Live performance graphs

With Uptime, organizations can launch their monitoring tests from servers in 15 locations across the world. They can also set up website uptime checks to run continuously on network assets and email systems.


Here is how Uptime can benefit your enterprise:

  • Facilitates a built-in no-code editor for checking transactions
  • Enables transaction checking for obtaining critical information on what is not functioning on the website

Uptime – Pros and Cons

Ideal for web asset monitoringSimple intuitive dashboardsDesigned for smaller enterprisesLimited free trial period

Uptime – Pricing

Uptime is based on a subscription pricing model with a prepaid credit for a specific number of tests.

7. Sematext

Sematext is a cloud-powered synthetic monitoring tool that monitors website performance using tests for checking loading speeds and errors. It enables companies to monitor both websites and applications from multiple locations.


Main Features

Here are some of the main features of Sematext:

  • Status pages provide information on the availability and performance of any monitored services
  • Statistical reports about error rates, page speed, loading time, and other metrics are made available

Sematext is among the best monitoring tools for DevOps environments. This tool can easily monitor uptime and APIs from private networks and multiple locations.


Here are some of the business benefits of Sematext:

  • The flexible pay-as-you-use pricing model
  • Repeated checks on SSL certificates, DNS records, and network protocols
  • Ability to choose the frequency of test launches according to the allocated budget

Sematext – Pros and Cons

8 test launch locationsCustomized alertsFailed test notificationFrequent testing can increase charges.

Sematext – Pricing

Sematext comes with a 14-day free trial and a pay-as-you-go plan priced at $29 monthly with 40 HTTP and 5 browsers.

8. Dotcom-Monitor

This synthetic monitoring platform can easily test the performance, availability, and uptime of web pages, web applications, and APIs. The Dotcom-Monitor tool enables users to focus on monitoring data instead of spending time on installation and setup.


Main Features

Here are some of the main features of Dotcom-Monitor:

  • Monitoring of web services, including SOAP, TCP, and ICMP
  • Web page monitoring that includes load time for single pages using real browsers from global data centers
  • Multi-step web transaction monitoring for performance, availability, and accessibility

Additionally, with this tool, you can easily create scripts to monitor critical web transactions – including portal logins, shopping carts, and customer signups.


Among its major benefits, Dotcom-Monitor enables users to focus on their monitoring scripts instead of spending time on installation and configuration.  

Dotcom Monitor – Pros and Cons

Real-time monitoring resultsUser-friendly dashboardWeb services monitoring is not exhaustivePoor diagnosis of website errors

Dotcom-Monitor – Pricing

Dotcom-Monitor is available with a 30-day free trial. Pricing depends on the number of monitoring steps for all scenarios within a single account.

9. Uptrends

With Uptrends synthetic monitoring tool, organizations can now run automated tests to check the performance of any website. With web browser evaluation, this tool enables simulating any user actions.


Main Features

Here are some of the main features of the Uptrends tool:

  • Concurrent monitoring of three or more locations.
  • Detailed performance data after page testing
  • Waterfall reports to identify the cause of slowdowns.
  • Bandwidth throttling to check website performance in slow networks.

This tool is currently being used by companies like Microsoft and Vimeo.


Uptrends facilitates 225 checkpoint servers to optimize website performance and is an ideal solution for small to medium enterprises.

Uptrends – Pros and Cons

Effective downtime monitoringGlobal checkpointsCost effectiveLack of support for recording scenarios in iframes.Custom alert option only on email

Uptrends – Pricing

Uptrends has 3 plans – ranging from $15.47 per month to $51.58 a month.

10. SolarWinds

SolarWinds is one of the best synthetic monitoring tools to install on internal servers and execute on-premises. This tool can perform continuous checks for availability on all websites.

A screenshot of a computer

Description automatically generated with medium confidence


Main Features

Here are some of the main features of the SolarWinds tool:

  • Support for both synthetic and real user monitoring
  • Live response graphs 
  • High frequency of 5 minutes for uptime monitoring
  • Root cause analysis tool for fixing performance issues.

As an on-premises website monitoring tool, SolarWinds monitors the website’s uptime and response time. 


Here are some of the main benefits of SolarWinds:

  • Continuous website checks for availability – thus minimizing downtime
  • No transactional charges, which ensures that you can run the monitoring tests as often as you like
  • Monitoring frequency of 5 minutes, with timely alerts and status reports for any failed connection

SolarWinds – Pros and Cons

Uptime monitoringNetwork device monitoringInventory managementCustom reporting is not easyLimited out-of-the-box templates

SolarWinds– Pricing

SolarWinds is available with a 30-day free trial.

11. Site24x7

Site24x7 offers synthetic monitoring services from over 110 global data centers. Its services include Ping tests and browser synthetics that provide information about the uptime and response time.


Main Features

Here are some of the main features of Site24x7:

  • Website checks include monitoring of SSL certificates, DNS, and domain expiry
  • Website defacement monitor to check websites for any errors
  • 110 test launch locations

Among its major features, Site24x7 services are compatible with Selenium test cases for browser testing. 


Here are some of the main benefits of Site24x7:

  • Ping-based tests provide accurate uptime and response time
  • Response time monitoring includes metrics on DNS fetches, connection, and first-byte arrival.

Site24x7 – Pros and Cons

Holistic tool for monitoring networks and real users.Over 110 testing locations for global reachFreeware version for testingDetailed platform that takes time to learn and master

Site24x7 – Pricing

Comes with a 30-day free trial plan and has 4 plans – namely Starter, Pro, Classic, and Enterprise.

We talk about Site24x7 alternatives in another article where we share 2 of our favorite picks.

12. SmartBear AlertSite

SmartBear AlertSite is a synthetic monitoring tool for websites, web apps, and APIs. It provides an intuitive user interface and a unified view on API performance.


SmartBear AlertSite

Main Features

Here are some of the main features of the SmartBear AlertSite tool:

  • Reusability of Selenium scripts for creating new monitors
  • DejaClick point-and-click web recorder for adding new monitors without coding
  • The facility to add new API monitors using API Endpoint URL and OpenAPI specifications

With over 350 global nodes, SmartBear AlertSite can easily be integrated with DevOps tool stacks. 


Here are some of the main benefits of SmartBear AlertSite:

  • Ideal for creating a variety of Web and API monitors
  • Effective monitoring of UI and API layers for their functionality, availability, and performance

SmartBear AlertSite – Pros and Cons

Effective for website and API monitoringIdeal for front page monitoringUser-friendly UIComplicated tool for creating alertsHigh number of false positive alerts

SmartBear AlertSite – Pricing

SmartBear AlertSite is available for a free trial – along with paid plans for internal and external monitoring and hybrid deployments.


In summary, synthetic monitoring tools are necessary for monitoring application (or website) performance and availability. Depending on your monitoring requirements, you can choose from any of these 12 synthetic monitoring tools.

As it stands, with appNeura, enterprises can easily simulate the user experience in the production and development environment. So, if you’re looking for a synthetic monitoring, get in touch with our experts today for a free demo.

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