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AlertSite Reviews

Vendor: SmartBear
4.0 out of 5
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What is AlertSite?

SmartBear's AlertSite is an application performance management and system monitoring software. AlertSite is an early warning system that users can rely on to monitor their websites, web apps, and APIs from any physical location as well as from within their private networks. It offers real-time alerting with root-cause analytics and robust reporting. AlertSite allows you to proactively monitor from an independent network of over 350 monitoring nodes worldwide.

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AlertSite is the #3 ranked solution in API Monitoring Software and #38 ranked solution in APM tools. PeerSpot users give AlertSite an average rating of 8.0 out of 10. AlertSite is most commonly compared to Datadog: AlertSite vs Datadog. AlertSite is popular among the large enterprise segment, accounting for 42% of users researching this solution on PeerSpot. The top industry researching this solution are professionals from a financial services firm, accounting for 16% of all views.
Buyer's Guide
AlertSite
March 2026
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Helped 885,264 peers since 2012

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AlertSite mindshare

Product category:
Application Performance Monitoring (A...
As of March 2026, the mindshare of AlertSite in the Application Performance Monitoring (APM) and Observability category stands at 0.5%, up from 0.1% compared to the previous year, according to calculations based on PeerSpot user engagement data.
Application Performance Monitoring (APM) and Observability Mindshare Distribution
ProductMindshare (%)
AlertSite0.5%
Dynatrace6.0%
Datadog5.2%
Other88.3%
Application Performance Monitoring (APM) and Observability

PeerResearch reports based on AlertSite reviews

TypeTitleDate
CategoryApplication Performance Monitoring (APM) and ObservabilityMar 29, 2026Download
ProductReviews, tips, and advice from real usersMar 29, 2026Download
ComparisonAlertSite vs DatadogMar 29, 2026Download
ComparisonAlertSite vs DynatraceMar 29, 2026Download
ComparisonAlertSite vs Splunk AppDynamicsMar 29, 2026Download
Suggested products
TitleRatingMindshareRecommending
Datadog4.35.2%97%209 interviewsAdd to research
Dynatrace4.46.0%95%359 interviewsAdd to research
 
 
Key learnings from peers

Valuable Features

AlertSite provides easy configuration of digital and single-URL monitors, supports location-based monitoring, and has an internal server. Features include an intuitive dashboard, real-time alerts, data monitoring history, error notifications, and out-of-the-box multi-factor authentication. Alert capabilities facilitate quick problem-solving. The DejaClick Recorder browser extension simplifies script creation without programming skills. Reports, both custom and inbuilt, enhance analytical capabilities, allowing efficient monitoring of on-premise and global applications from a single UI.
  • "If there are any issues, it triggers an alert within 30 seconds."
  • "My company went with AlertSite because as a tool, it's fast, easy to maintain, and provides great support."
  • "The return on investment of this solution is well witnessed in our organization because of the integration and various capabilities that it offers to interact with the upstream or downstream systems."

Room for Improvement

AlertSite's reporting capabilities and private locations need enhancement. Support and documentation require improvements due to limited availability and incompleteness. Security concerns, particularly regarding recent findings, demand attention. Automation struggles with some platform compatibility. Improvements in alert customization and UI speed are necessary. Users report false alerts and limited UI options. The platform's focus on API management is perceived as lacking in monitoring innovation. Enterprises require more consistent and readily available support.
  • "AlertSite sometimes triggers false alerts or fake alerts, which needs to be rectified. When we see an alert and go ahead and run certain tests on it, the test always passes, however, on the main screen, it shows up as critical."
  • "What needs improvement in AlertSite is the documentation, particularly the lack of documentation."
  • "AlertSite requires improvements related to security, even at the enterprise level."

ROI

AlertSite has proven to be a valuable investment for organizations, thanks to its integration and wide range of capabilities. It allows users to effectively interact with both upstream and downstream systems. By serving as a proactive indicator for priority-one or severity-one incidents, it helps users address issues before they become major problems. 

Pricing

Enterprise buyers found AlertSite's licensing options offer flexibility, allowing selection of user licenses and annual contracts. Although costs can be considered high by some, this varies based on the number of monitors needed. Management typically oversees licensing and cost decisions. Many users rated AlertSite's pricing favorably, considering it reasonable or assigning a high satisfaction score. This feedback indicates a generally positive perception about pricing among users.
  • "My company pays to use AlertSite, but I'm unsure of the exact costs because it depends on how many monitors you have."
  • "The cost is high."
  • "We purchased the license once and had the option of selecting the number of user licenses."

Popular Use Cases

AlertSite is used primarily for monitoring cloud applications, URL and multistep transactions, portals, intranets, and airline profiles. Users monitor availability, latency, login functions, failures, and more through synthetic checks, URL checks, TCP connections, and API monitoring. AlertSite's Deja-Click feature creates recordings to detect UI changes and alerts teams of downtime or issues, integrating SaaS locations or private node servers for internal network management.

Service and Support

Customer service and support for AlertSite can be challenging at times, with some issues going unaddressed. Users appreciate documentation, although it's not fully updated. Support response time is quick on weekdays but slower on weekends, requiring scheduling for updates. Technical assistance is rated positively, though not available around the clock, as the team is US-based. Many reach out initially for scripting and functionality guidance, while others need help for unique issues.

Deployment

AlertSite's initial setup is generally straightforward and user-friendly. While some technical knowledge or documents may be needed, it can typically be managed by an intermediate person. The process duration varies, from a few minutes for a single monitor to a couple of days if coordinating with different teams. Some setups were completed swiftly with support team assistance. Tools like the DejaClick Recorder make creating scripts easier, and API integration further simplifies monitor setup.

Scalability

AlertSite demonstrates strong scalability, excelling particularly in the SaaS environment where management is seamless. On-premise infrastructure presents some challenges requiring capacity benchmarks, but adding users is straightforward. Companies find it easy to scale, managing varying hardware demands without issue. The scalability is generally rated high, often scoring between eight and nine out of ten. AlertSite effectively supports teams and users, accommodating expansion needs efficiently within diverse setups.

Stability

Users agree AlertSite is stable and performs well as a platform. Most find it reliable, with minimal downtime in recent years. Some users see potential improvements in application-level performance and support, but many prioritize its steady performance for SaaS locations and on-premise setups. Ratings range from eight to nine out of ten, reflecting confidence in its reliability.
These insights are based on the in-depth reviews provided by peers to help you make a better buying decision.
Download our AlertSite Buyer's Guide for additional reliable information.

Top industries

By visitors reading reviews
Financial Services Firm
16%
Construction Company
13%
Marketing Services Firm
11%
Performing Arts
9%
Insurance Company
7%
Healthcare Company
5%
Transportation Company
5%
University
5%
Outsourcing Company
4%
Educational Organization
4%
Computer Software Company
4%
Manufacturing Company
2%
Energy/Utilities Company
2%
Government
2%
Legal Firm
2%
Logistics Company
2%
Comms Service Provider
2%
Non Profit
2%
Retailer
2%
Leisure / Travel Company
2%

Compare AlertSite with alternative products

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Learn more about AlertSite

Here are AlertSite’s 6 use cases: 

  1. Monitor web: AlertSite monitors beyond availability to detect performance anomalies and notify the appropriate people when deviations occur, whether it's online apps or websites.

  2. Monitor APIs: Check to see that your internal, external, and third-party APIs are working properly, returning the correct content, and performing as expected.

  3. Monitor apps: With nearly any action, monitor your online sites and applications using actual browsers, just like a consumer. There is no need for scripting.

  4. Monitor mobile: Monitor your mobile-friendly websites, native mobile apps, carrier-based nodes, and network speeds with real devices (3G, 4G LTE).

  5. Monitor SLAs: Make sure you're meeting service-level agreements' requirements. SLA requirements are monitored and reported on by AlertSite.

  6. Monitor cloud: Monitor your cloud-based applications to improve mobility. AlertSite monitors your apps across public and private clouds, giving you complete visibility into their status.

AlertSite Features

AlertSite has many valuable key features. Some of the most useful ones include:

  • Enables a comprehensive view of UI and API performance.

  • Monitoring coverage from 350+ worldwide nodes and private networks.
  • Integrates with DevOps and Ops tool stacks.

  • Displays availability and performance data that assist in determining the root cause of performance problems.

  • With AlertSite's Single Sign-On (SSO) support, you can assist your authentication procedures.

  • Free training and assistance. AlertSite’s responsive team is always there to assist you, from the initial rollout through day-to-day support.

  • Eliminates the stress of false alerts using these key features:

    • Tracks the performance of your apps, APIs, and websites.

    • Sets up monitor and alarm schedules, as well as blackout periods and retry choices.

    • Sets alert thresholds that are both static and dynamic.

    • Calculates the number of failures needed to set off an alarm.

    • After the first failure, retries logic.

    • Based on error code, sends an alert to recipients and group routing.

    • Tests from over 85 different locations across the world, with internal and external monitoring.

    • Defines assertions and validations.

    • Integrates with PagerDuty, Slack, Splunk, VictorOps, and more.
  • Easy configuration with help from these key features:

    • DejaClick is an intuitive, seamless plug-in for documenting web transactions and user journeys.

    • Use the point-and-click script creation for website, web, and mobile monitor scripts.

    • Benefit from using native API monitor creation.

    • Scripts for functional tests can be reused.

    • Automate monitor creation by using Swagger Specs or OpenAPI Specification files.

AlertSite customers

JetBlue, Payless ShoeSource, Hilton Inc., StubHub, Symantec, Newegg, Sapient, AstraZeneca, Dell, Quest Diagnostics

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Product Categories

Product Categories
Application Performance Monitoring (APM) and Observability
API Monitoring Software

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AlertSite Reviews Summary
Author infoRatingReview Summary
Assistant Director at a consultancy with 10,001+ employees4.0I've been using AlertSite since 2019 for enterprise-level monitoring. Its ease of script creation and support for multi-factor authentication are valuable features. However, it lacks 24/7 support and future-focused innovation, especially in generative AI.
Team lead at a consultancy with 10,001+ employees4.0I monitored kiosks and servers for JetBlue Airlines using AlertSite, which helped in quickly identifying and escalating issues, achieving a 95% target for preventing severe outages. The alerting capabilities were impressive. However, the UI could be more user-friendly.
Senior Analyst Monitoring and Reporting at Empower4.0My team uses AlertSite for synthetic monitoring and URL, TCP, and API checks. I appreciate its data monitoring history and user-friendliness but find the UI slow and support availability lacking. It complements other tools like AppDynamics and Splunk.
Assistant Director at a consultancy with 10,001+ employees3.5I use AlertSite for monitoring, valuing its reach, analytics, and proactive ROI. Setup is simple, but enterprise security and on-premise scalability concern me. It's costly, and I rate it 7/10.
Senior Business System Developer at AVEVA4.5AlertSite effectively monitors my portal's uptime, offering immediate notifications and visual reports. It's user-friendly and stable with great support. My main issue is the poor documentation, forcing me to contact support frequently.
Sr Technical Consultant at a wholesaler/distributor with 10,001+ employees3.5I found AlertSite easy to configure and stable for simple monitoring. However, reporting, customer support, and automation compatibility are significant weaknesses, making it less suitable for complex infrastructures. I rated it 7 out of 10.
Team lead at a consultancy with 10,001+ employees4.5I use AlertSite for real-time airline monitoring, valuing its quick alerts and high stability, despite occasional false alarms and a limited UI. It was easy to set up and is a reliable alternative, which I rate 9/10.