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AlertSite vs Mezmo comparison

SmartBear and Mezmo are both solutions in the Application Performance Monitoring (APM) and Observability category. SmartBear is ranked #37 with an average rating of 8.0, while Mezmo is ranked #76. SmartBear holds a 0.1% mindshare in APM, compared to Mezmo’s 0.1% mindshare. Additionally, 100% of SmartBear users are willing to recommend the solution, compared to 100% of Mezmo users who would recommend it.
AlertSite
Read 6 AlertSite reviews
  • 325 Views
  • 223 Comparison Views
100% willing to recommend
Mezmo
Read 2 Mezmo reviews
  • 202 Views
  • 115 Comparison Views
100% willing to recommend
 

Comparison Buyer's Guide

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Executive Summary
We performed a comparison between AlertSite and Mezmo based on real PeerSpot user reviews.

Find out in this report how the two Application Performance Monitoring (APM) and Observability solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI.

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To learn more, read our detailed AlertSite vs. Mezmo Report (Updated: April 2025).
Buyer's Guide
AlertSite vs. Mezmo
April 2025
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Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

AlertSite
Ranking in Application Performance Monitoring (APM) and Observability
37th
Average Rating
8.0
Reviews Sentiment
7.6
Number of Reviews
6
Ranking in other categories
API Monitoring Software (4th)
Mezmo
Ranking in Application Performance Monitoring (APM) and Observability
76th
Average Rating
9.0
Number of Reviews
2
Ranking in other categories
Log Management (54th), Observability Pipeline Software (5th)
 

Mindshare comparison

As of April 2025, in the Application Performance Monitoring (APM) and Observability category, the mindshare of AlertSite is 0.1%, down from 0.1% compared to the previous year. The mindshare of Mezmo is 0.1%, up from 0.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Application Performance Monitoring (APM) and Observability
 

Featured Reviews

SandeepTarwe - PeerSpot reviewer
Alerting capabilities have enabled timely escalation and resolution of issues
In AlertSite, I was monitoring the kiosks and servers for JetBlue Airlines. The servers would trigger alerts if there were any outages or issues with any of the kiosks, servers, or the ticketing tool. I monitored these alerts and escalated them to the concerned team to rectify them at the earliest…
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TO
Has vastly increased our ability to reach SLA targets consistently
Scalability could be improved. We are using it through the IBM cloud deployment and on some of the data centers that are very heavily used, there is a significant lag in the event stream, sometimes 10, 15 minutes behind, which makes the RCA impossible. If an event hits but you don't have the information to look at it, then it's tricky. This is probably not an issue of the product itself, but more a deployment issue. There is something on the IBM side that needs some readjustment to make certain these lags don't happen too often. We now use other tools for back-up in that area. But if you really want to do SIEM type work, then that is an aspect that needs some improvement. It's hard to tell if it's the product or the IBM deployment of it. The user interface is really very productive interactively but for an additional feature, it would be nice if we somehow could encapsulate a query or a filter, and communicate or share that among the team so that specific types of actions can be carried out quickly. In particular, when we deal with a customer issue, it may pertain to a particular transaction through the system and each transaction has a unique ID. It would be great if we could query that ID and request all transactions that pertain to a specific ID. For now, we need to find the events, then extract the ID. Once we have that, we can go through the UI to set up the query and filter it to give us a transaction. But it would be really nice if we could simply say, "Here's the ID. Give me all the transactions."
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Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The best feature of AlertSite is that it shows you a visual graph and also sends you notifications about errors, so you get immediate notifications about errors which means that your support team can start taking steps and more quickly make sure the site is up and that customer experience isn't interrupted in terms of using your system and your products. AlertSite is a very good tool. It's user-friendly, and you can see everything on the dashboard. Configuring it is also easy."
"The alerting capabilities were really helpful."
"This solution has numerous advantages. It's extremely simple to configure. Either digital monitors or single-URL monitors are simple to configure and build."
"There are custom reports available along with the inbuilt reports."
"I found multiple features in AlertSite that I like. One is data monitoring history, for example, a history of the blackouts and the data. Sometimes, there's a glitch in the application that AlertSite can capture, and the tool notifies you about that glitch. It also identifies issues that could happen in the future. AlertSite is also a fast tool that you can use to monitor on-premise servers, internal applications, and even global applications. The data is available on a single UI in AlertSite, so there's no need to monitor and click on different applications or URLs. I also love that the tool is quite user-friendly, apart from being fast."
"The alerting capabilities of AlertSite were really helpful."
"If there are any issues, it triggers an alert within 30 seconds. When it triggers the alert, we go ahead and check it immediately. The alert is triggered on a real-time basis."
"LogDNA consolidates all logs into one place, which is super valuable."
"The solution aggregates all event streams, so that if there are any issues, it's all in the same interface."
 

Cons

"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. Therefore, the false alert needs to be fixed."
"It is not compatible with all of the product platforms that we use."
"I would like the ability to get more data points with regard to some of the unique requirements that we have."
"What needs improvement in AlertSite is the documentation, particularly the lack of documentation. If there's a specific activity you want to do, you can't even find information on how to do it, so you have to contact the AlertSite support team to assist you, and only then would the issue be resolved. At the moment, it's not easy to find or get full documentation on how to deal with different issues. You always have to go back to AlertSite support and get help. The documentation for AlertSite could be improved and it's what I'd like to see in the next release of the tool because at the moment, the documentation isn't complete, so you'll have to contact support, but contacting support isn't an issue because the team responds to you quickly."
"I could use a few changes to the user interface."
"One area that needs improvement in AlertSite is the slow UI. I'm using the classic UI because it's quite user-friendly, or in human-readable format, but it's a little slow. It takes time to load all the monitors, so if that could be sped up, that would be helpful. The AlertSite support team also needs improvement in terms of availability. Most of the agents in the team aren't available 24 x 7, so if there's something you need to discuss, you need to tell the support team ahead of time to schedule it. Multiple times, when a case comes up during weekends or whenever my team is doing an update, support needs improvement, availability-wise. I use AlertSite for synthetic monitoring, so whatever is available right now is okay, but if I want to request a new feature on a website, currently, the UI refreshes automatically. I would like to have the option on AlertSite to configure that manually. The UI auto-updates every few minutes, so if I can control that manually, that would be helpful."
"Every once in a while, our IBM cloud operational implementation gets behind. Sometimes, when we have a customer event, we do not get access to the latest logs for about 30 minutes, particularly for the sites that are heavily utilized. This is clearly not good. It is impossible to RCA when you can't look at the logs that pertain to the time period in which the event occurred. It could be more of an operational problem than a feature problem. I don't have visibility about whether it is a LogDNA issue or just an operational issue."
"No ability to encapsulate a query or a filter, and communicate or share that among the team."
 

Pricing and Cost Advice

"The cost is high."
"We purchased the license once and had the option of selecting the number of user licenses."
"My company pays to use AlertSite, but I'm unsure of the exact costs because it depends on how many monitors you have."
Information not available
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Top Industries

By visitors reading reviews
Financial Services Firm
22%
Computer Software Company
15%
Real Estate/Law Firm
10%
Manufacturing Company
8%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for AlertSite?
The pricing is reasonable.
See all answers
What needs improvement with AlertSite?
When I last worked with AlertSite, everything was okay. However, we could make some changes to the UI. While it was user-friendly, making it a bit easier for new users to work on would be beneficial.
See all answers
What is your primary use case for AlertSite?
In AlertSite, I was monitoring the kiosks and servers for JetBlue Airlines. The servers would trigger alerts if there were any outages or issues with any of the kiosks, servers, or the ticketing to...
See all answers
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Comparisons

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Product Reports

Buyer's Guide
AlertSite
April 2025
AlertSite reportDownload AlertSite product report
Buyer's Guide
Apica vs. Mezmo
April 2025
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Also Known As

No data available
LogDNA
 

Overview

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.

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.
SmartBear

Today’s enterprises must manage a massive amount of machine data. They require a platform that enables engineering teams to deliberately route and store structured and unstructured data for different teams with unique use cases. Legacy platforms weren’t made for this moment.
‍
Mezmo, formerly LogDNA, lets organizations ingest, process, route, analyze, and store all of their log data. Purpose-built for modern engineering teams—including developers, SREs, IT Operations, and Security Engineers—the Mezmo platform is trusted by thousands of companies for SaaS, cloud, and hybrid applications.

Mezmo
 

Sample Customers

JetBlue, Payless ShoeSource, Hilton Inc., StubHub, Symantec, Newegg, Sapient, AstraZeneca, Dell, Quest Diagnostics
Instacart, Asics, Lime, Salesforce
Buyer's Guide
AlertSite vs. Mezmo
April 2025
Free Report: AlertSite vs. Mezmo
Find out what your peers are saying about AlertSite vs. Mezmo and other solutions. Updated: April 2025.
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We monitor all Application Performance Monitoring (APM) and Observability reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.