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AlertSite vs Datadog comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 25, 2026

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
46th
Average Rating
8.0
Reviews Sentiment
7.6
Number of Reviews
7
Ranking in other categories
API Monitoring Software (3rd)
Datadog
Ranking in Application Performance Monitoring (APM) and Observability
1st
Average Rating
8.6
Reviews Sentiment
7.0
Number of Reviews
210
Ranking in other categories
Network Monitoring Software (4th), IT Infrastructure Monitoring (2nd), Log Management (4th), Container Monitoring (3rd), Cloud Monitoring Software (1st), AIOps (1st), Cloud Security Posture Management (CSPM) (5th), AI Observability (1st)
 

Mindshare comparison

As of May 2026, in the Application Performance Monitoring (APM) and Observability category, the mindshare of AlertSite is 0.6%, up from 0.1% compared to the previous year. The mindshare of Datadog is 4.7%, down from 9.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Application Performance Monitoring (APM) and Observability Mindshare Distribution
ProductMindshare (%)
Datadog4.7%
AlertSite0.6%
Other94.7%
Application Performance Monitoring (APM) and Observability
 

Featured Reviews

IH
Assistant Director at a consultancy with 10,001+ employees
Enterprise-level monitoring facilitates global observability and seamless script creation with intuitive tools
SmartBear, as a vendor, is focusing more on API management and testing rather than monitoring. AlertSite could benefit from more future-focused innovation, especially with competencies in generative AI. Additionally, support from AlertSite is not at an enterprise level since it is not offered 24/7. Outside of critical platform issues, there's no continuous support available.
Dhroov Patel - PeerSpot reviewer
Site Reliability Engineer at Grainger
Has improved incident response with better root cause visibility and supports flexible on-call scheduling
Datadog needs to introduce more hard limits to cost. If we see a huge log spike, administrators should have more control over what happens to save costs. If a service starts logging extensively, I want the ability to automatically direct that log into the cheapest log bucket. This should be the case with many offerings. If we're seeing too much APM, we need to be aware of it and able to stop it rather than having administrators reach out to specific teams. Datadog has become significantly slower over the last year. They could improve performance at the risk of slowing down feature work. More resources need to go into Fleet Automation because we face many problems with things such as the Ansible role to install Datadog in non-containerized hosts. We mainly want to see performance improvements, less time spent looking at costs, the ability to trust that costs will stay reasonable, and an easier way to manage our agents. It is such a powerful tool with much potential on the horizon, but cost control, performance, and agent management need improvement. The main issues are with the administrative side rather than the actual application.

Quotes from Members

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

Pros

"There are custom reports available along with the inbuilt reports."
"I highly recommend AlertSite to other users."
"My company went with AlertSite because as a tool, it's fast, easy to maintain, and provides great support."
"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."
"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 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."
"Real user monitoring gives us invaluable insights into actual user experiences, helping us prioritize improvements where they matter most."
"It has democratized our logs and metrics, allowing all engineers to have insight into how our apps perform."
"We find they have a very helpful alert system."
"The performance of Datadog is good."
"The features I have found most helpful are synthetic monitoring, APM, and alert features."
"Dashboards are helpful for reviewing occasionally to get a higher-level overview of what's happening."
"Metric graphing and Dashboards are the most valuable features because they give us good observability into our system and work well to alert us when interesting things happen."
"Datadog helps us detect issues early on and helps in troubleshooting."
 

Cons

"What needs improvement in AlertSite is the documentation, particularly the lack of documentation."
"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."
"I would like the ability to get more data points with regard to some of the unique requirements that we have."
"Additionally, support from AlertSite is not at an enterprise level since it is not offered 24/7."
"In terms of support, it is all based on the cost of the subscription that our company purchased, but it wasn't great, and it could've been much better."
"I could use a few changes to the user interface."
"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."
"One area where I was really looking for improvement was the CSPM product line. I had really wanted to have team-level visibility for findings, since the team managing the resources has much more context and ability to resolve the issue, as the service owner. However, this has been added to the announcement in a recent keynote."
"The performance, especially when were drilling into metrics we've been running for a year and a half. When you're launching old data it can get slow."
"We need to learn more about the session reply feature inside of DD."
"Another issue that I have is with the search syntax, it could be simpler and it feels like there are too many ways to do the same things."
"Once Datadog has gained wide adoption, it can often be overwhelming to both know and understand where to go to find answers to questions."
"The only thing that they were missing that has thrown us from the beginning (they are still missing it) is consistency in the APIs."
"It could use some additional features when working with metrics like Grafana or like New Relic has. Datadog does not use library technologies like Dynatrace does. Datadog has machine learning too, but it does not have this option in all layers of monitoring like infrastructure service process in applications."
"The UI has a lot going on. It should be simpler and have a better way to onboard someone new to using Datadog."
 

Pricing and Cost Advice

"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."
"The cost is high."
"They prefer monthly subscriptions."
"It costs the same amount it would if we were hosting it ourselves, so we are incredibly happy with the cost."
"I am not satisfied with its licensing. Its payment is based on the exported data, and there was an explosion of the data for three or four weeks. My customer was not alerted, and there was no way for them to see that there has been an explosion of data. They got a big invoice for one or two months. The pricing model of Datadog is based on the data. The customer was quite surprised about not being alerted about this explosion of data. They should provide some kind of alert when there is an increase in usage."
"The cost is high and this can be justified if the scale of the environment is big."
"My advice is to really keep an eye on your overage costs, as they can spiral really fast."
"While it is an expensive product, I would rate the pricing level at four out of five."
"If you do your homework, you'll find that if you're really concerned with cost, it's good."
"It is easy to run up a large bill, so become familiar with the cost of each piece of your bill and use the metrics they supply to estimate and monitor your bill."
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Top Industries

By visitors reading reviews
Construction Company
21%
Financial Services Firm
15%
Comms Service Provider
11%
Marketing Services Firm
7%
Financial Services Firm
14%
Computer Software Company
9%
Manufacturing Company
8%
Healthcare Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Large Enterprise8
By reviewers
Company SizeCount
Small Business82
Midsize Enterprise47
Large Enterprise100
 

Questions from the Community

What is your experience regarding pricing and costs for AlertSite?
I would rate the pricing aspects of AlertSite as nine out of ten, indicating it is good or low-priced.
What needs improvement with AlertSite?
SmartBear, as a vendor, is focusing more on API management and testing rather than monitoring. AlertSite could benefit from more future-focused innovation, especially with competencies in generativ...
What is your primary use case for AlertSite?
I have been working with the AlertSite ( /products/alertsite-reviews ) product since 2019. Within our organization, specifically one service unit at one of the Big Four firms, this product has been...
Any advice about APM solutions?
There are many factors and we know little about your requirements (size of org, technology stack, management systems, the scope of implementation). Our goal was to consolidate APM and infra monitor...
Datadog vs ELK: which one is good in terms of performance, cost and efficiency?
With Datadog, we have near-live visibility across our entire platform. We have seen APM metrics impacted several times lately using the dashboards we have created with Datadog; they are very good c...
Which would you choose - Datadog or Dynatrace?
Our organization ran comparison tests to determine whether the Datadog or Dynatrace network monitoring software was the better fit for us. We decided to go with Dynatrace. Dynatrace offers network ...
 

Comparisons

 

Overview

 

Sample Customers

JetBlue, Payless ShoeSource, Hilton Inc., StubHub, Symantec, Newegg, Sapient, AstraZeneca, Dell, Quest Diagnostics
Adobe, Samsung, facebook, HP Cloud Services, Electronic Arts, salesforce, Stanford University, CiTRIX, Chef, zendesk, Hearst Magazines, Spotify, mercardo libre, Slashdot, Ziff Davis, PBS, MLS, The Motley Fool, Politico, Barneby's
Find out what your peers are saying about AlertSite vs. Datadog and other solutions. Updated: April 2026.
893,438 professionals have used our research since 2012.