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Fortinet FortiADC vs HAProxy vs Kemp LoadMaster comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

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

ROI

Sentiment score
6.6
Fortinet FortiADC is chosen for reliable load management, security, and support, offering moderate ROI and essential performance.
Sentiment score
7.8
Companies favor HAProxy for cost-effective traffic management, saving on load balancers, and retaining customers annually with positive ROI.
Sentiment score
7.4
Kemp LoadMaster is a cost-effective solution that enhances efficiency, security, and offers significant returns quickly in various industries.
The alert system is efficient, sending alerts within a fraction of a second if any power issues arise.
 

Customer Service

Sentiment score
6.1
Fortinet FortiADC customer service is praised for effective support but varies in response time and relies on ticket prioritization.
Sentiment score
7.3
HAProxy's customer service has mixed reviews with suggestions for better documentation, though premium support is appreciated but inconsistent.
Sentiment score
8.8
Kemp LoadMaster support is highly rated for its knowledgeable, efficient team offering quick issue resolution and comprehensive online resources.
The support team is knowledgeable and efficiently assists with automation and configuration problems.
The service is helpful yet not excellent.
We have not received technical support from Kemp LoadMaster without a license.
 

Scalability Issues

Sentiment score
7.5
Fortinet FortiADC provides scalable solutions with virtual and cloud options, though performance varies by model and infrastructure needs.
Sentiment score
7.8
HAProxy scales efficiently, supporting diverse loads and thousands of users, adaptable for both small and large business needs.
Sentiment score
8.2
Kemp LoadMaster is highly scalable, supporting smooth upgrades and adaptable licensing for both small and large enterprises.
It is scalable for some versions, however, as components reach their end of support, upgrades are necessary to maintain scalability.
Kemp LoadMaster is a scalable solution.
 

Stability Issues

Sentiment score
8.2
Fortinet FortiADC is praised for stability, reliable operation, effective support, and minor issues resolved through firmware updates.
Sentiment score
8.1
HAProxy is highly rated for stability and reliability, though some users occasionally face configuration and compatibility challenges.
Sentiment score
8.7
Kemp LoadMaster is praised for its stability, reliability, high availability, and effective server load management with minimal downtime.
The support system is reliable when issues like automation or configuration arise.
With the license purchase afterwards, if it expires, it begins dropping the HTTP traffic, also the DNS traffic.
 

Room For Improvement

Fortinet FortiADC needs advancements in algorithms, UI, support, documentation, scalability, features, pricing, licensing, performance, cloud, and AI integration.
HAProxy needs better pricing, monitoring, documentation, dashboard functionality, performance stability, and enhanced GUI and TCP session control.
Kemp LoadMaster needs UI, security, documentation enhancements, improved monitoring, automation, analytics, and better cloud integration.
The limitation of managing all components and the differing versions pose challenges.
If I need design help, they do not assist; they say it is a design issue they cannot support, and I must approach the system integrator.
After that, they said if it was good, we could purchase the license, and while we found it very good, the license cost was too high.
 

Setup Cost

Fortinet FortiADC is affordable compared to competitors, with flexible licensing, varying costs, and potential discounts based on configurations.
HAProxy is free open-source software offering economic benefits, easy setup, and optional affordable extended features for integrated solutions.
Kemp LoadMaster offers flexible, cost-effective licensing and setup with positive user feedback and a 30-day free trial.
This solution is quite expensive compared to Kemp.
 

Valuable Features

Fortinet FortiADC excels in load balancing, security, and ease of integration, offering scalable, reliable, and comprehensive traffic management solutions.
HAProxy offers load balancing, security, customization, scalability, open-source benefits, and efficient traffic management with user-friendly setup and cost savings.
Kemp LoadMaster offers ease of use, security features, Azure integration, and cost-effective load balancing for Microsoft applications.
I use server load balancing and employ layer seven features, which provide more granular traffic shaping and detailed logs.
FortiADC provides load-balancing capabilities needed for integration with other Fortinet platforms.
We had some issues in patching management, so we deployed this product for virtual patching, the IPS rule, and it gives us very good results because we have very critical servers.
 

Mindshare comparison

As of August 2025, in the Application Delivery Controllers (ADC) category, the mindshare of Fortinet FortiADC is 9.6%, up from 8.6% compared to the previous year. The mindshare of HAProxy is 11.9%, down from 12.7% compared to the previous year. The mindshare of Kemp LoadMaster is 7.3%, up from 7.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Application Delivery Controllers (ADC) Market Share Distribution
ProductMarket Share (%)
HAProxy11.9%
Fortinet FortiADC9.6%
Kemp LoadMaster7.3%
Other71.2%
Application Delivery Controllers (ADC)
 

Featured Reviews

OusaidAbaz - PeerSpot reviewer
Integrates load balancing efficiently within existing technology environments
FortiADC provides load-balancing capabilities needed for integration with other Fortinet platforms. It allows for the creation of virtual IPs and applying various algorithms for traffic management. Although it offers fewer algorithms than competing platforms like F5, its capability to manage load balancing makes it valuable. The security features depend on the environment, relying on firewalls like FortiGate.
Kaushlendra Singh - PeerSpot reviewer
Used for load balancing, but its dashboard and reporting could be improved
We use the solution for load balancing The solution's implementation and troubleshooting are not easy. The solution's dashboards and reports could be improved. I have been using HAProxy for 12 years. We didn’t face any issues with the solution’s stability. I rate the solution’s stability an…
IshtiaqKhalil - PeerSpot reviewer
Displays flexible, user-friendly interface with minor licensing challenges
The product could be improved with a more intuitive interface for complex configurations and more advanced analytics. Additionally, enhanced security features, like a more robust Web Application Firewall, and stronger APIs for better automation would be beneficial. Overall, the main areas for improvement are in strengthening the advanced features to better meet the demands of large-scale enterprise environments. key features for the next release should focus on three areas. First, an enhanced, next-generation security suite with a more powerful Web Application Firewall (WAF) and integrated bot protection. Second, more advanced and customizable analytics dashboards to provide deeper insights into application performance. Finally, greater support for modern, cloud-native environments, including better APIs for automation and seamless hybrid-cloud traffic management
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Top Industries

By visitors reading reviews
Computer Software Company
14%
Financial Services Firm
8%
Government
8%
Educational Organization
6%
Computer Software Company
18%
Financial Services Firm
11%
Comms Service Provider
9%
Government
7%
Computer Software Company
15%
Government
8%
Manufacturing Company
7%
University
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise4
Large Enterprise7
By reviewers
Company SizeCount
Small Business14
Midsize Enterprise13
Large Enterprise15
By reviewers
Company SizeCount
Small Business24
Midsize Enterprise13
Large Enterprise16
 

Questions from the Community

Is Citrix ADC (formerly Netscaler) the best ADC to use and if not why?
For ADC, any ADC can do a good job. But in case if you want to add WAF functionality to the same ADC hardware you hav...
Do you recommend Fortinet FortiADC?
I recommend Fortinet FortiADC. My experience with Fortinet has been very positive. Our company has been using it for ...
What do you like most about Fortinet FortiADC?
The user interface is very easy and integrates with Sandbox easily.
Do you recommend HAProxy?
I do recommend HAProxy for more simple applications or for companies with a low budget, since HAProxy is a free, open...
What do you like most about HAProxy?
The solution is effective in managing our traffic.
What do you like most about Kemp LoadMaster?
Scalability-wise, I rate the solution a ten out of ten...I rate the technical support a ten out of ten...The initial ...
What is your experience regarding pricing and costs for Kemp LoadMaster?
LoadMaster is cheaper than some other solutions. It has a perpetual license, so it's a one-time cost.
What needs improvement with Kemp LoadMaster?
There are some challenges with updates on certain models that don't have a few features. The support team often takes...
 

Also Known As

FortiADC Application Delivery Controller, FortiADC
HAProxy Community Edition, HAProxy Enterprise Edition, HAPEE
LoadMaster Load Balancer
 

Overview

 

Sample Customers

Black Gold Regional Schools, Amadeus Hospitality, Jefferson County, Chunghwa Telecom, City of Boroondara, Dimension Data
Booking.com, GitHub, Reddit, StackOverflow, Tumblr, Vimeo, Yelp
Kent County Council, KEMP, SMA Solar Technology AG, RT€ Player , Victrix (Quebec, Canada), Texas A&M, Macmillan Cancer Support, Cisco, Austin Bank
Find out what your peers are saying about NetScaler, F5, Microsoft and others in Application Delivery Controllers (ADC). Updated: August 2025.
866,088 professionals have used our research since 2012.