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A10 Networks Thunder ADC vs Fortinet FortiADC comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Dec 17, 2024

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
7.0
A10 Networks Thunder ADC enhances ROI rapidly, reducing costs and overhead while enabling significant long-term financial benefits.
Sentiment score
5.0
Fortinet FortiADC offers reliable web traffic management with strong support, but users find WAF functionality could improve usability.
We do see a return on investment and cost reductions after the implementation of A10 Networks Thunder ADC.
Head Of Technical And Network Security at Connex Information Technologies
The alert system is efficient, sending alerts within a fraction of a second if any power issues arise.
Senior Network Engineer at SP SYSNET PTE. LTD.
 

Customer Service

Sentiment score
6.9
A10 Networks Thunder ADC support is responsive and expert, though improving first-call resolution and online resources is desired.
Sentiment score
6.2
Fortinet FortiADC's support experiences vary, with praise for professionalism but issues with response times and license-related impacts.
Their tech support is very responsible, and their response time is very low, providing superb support.
PM at Connex Information Technologies
The support we receive from the team is quite excellent.
Head Of Technical And Network Security at Connex Information Technologies
The support team is knowledgeable and efficiently assists with automation and configuration problems.
Security Network Architect at novonordisc
It varies depending on the engineer assigned; in most cases, we resolve issues on the first attempt.
Senior Technical Engineer at Safezone Secure Solutions Private Limited
Fortinet technical support is very good, and they provide us with better support.
Team Lead at Adapt Information Technologies (Pvt) Ltd
 

Scalability Issues

Sentiment score
6.9
A10 Networks Thunder ADC offers scalable, user-friendly solutions for diverse applications, with room for feature improvements over competitors.
Sentiment score
7.4
Fortinet FortiADC is scalable with virtual, cloud, and hardware models, but accurate initial sizing is crucial for expansion.
A10 Networks Thunder ADC's scalability is impressive.
IT Architecture Manager at a government with 10,001+ employees
A10 Networks Thunder ADC can handle growth easily, and I have scaled up during higher traffic periods.
Senior Consultant and Creative Director at a consultancy with 11-50 employees
For those opting for a SaaS or cloud solution, there is scalability and flexibility.
Senior Technical Engineer at Safezone Secure Solutions Private Limited
It is scalable for some versions, however, as components reach their end of support, upgrades are necessary to maintain scalability.
Security Network Architect at novonordisc
 

Stability Issues

Sentiment score
8.2
A10 Networks Thunder ADC is highly reliable, achieving five nines uptime, with minor bugs not affecting production stability.
Sentiment score
8.2
Fortinet FortiADC is highly stable and reliable, with responsive support, despite minor bugs occasionally introduced by firmware updates.
In some of our deployments of A10 Networks Thunder ADC, we have employed DDoS and other security features, and for the past few years, we haven't experienced any major incidents.
Head Of Technical And Network Security at Connex Information Technologies
Most of the time, it just runs in the background without issues.
Senior Consultant and Creative Director at a consultancy with 11-50 employees
The support system is reliable when issues like automation or configuration arise.
Security Network Architect at novonordisc
Overall, it has been good; in the past it was very good, and now it is still performing well.
Senior Technical Engineer at Safezone Secure Solutions Private Limited
We have two applications in two ESXi hosts that I integrated into our ADC, and I created one virtual IP in the virtual server pool.
Team Lead at Adapt Information Technologies (Pvt) Ltd
 

Room For Improvement

A10 Networks Thunder ADC needs user-friendly improvements, better support, integration, security updates, scalability, pricing, and advanced features.
Fortinet FortiADC users seek better support, documentation, and features, including load-balancing, security, interface, and resource optimization improvements.
Having more structured, real-world configuration examples would make a big difference, especially for teams that are new to the platform, helping reduce the initial learning curve for them.
Senior Consultant and Creative Director at a consultancy with 11-50 employees
In the vThunder series of A10 Networks Thunder ADC, they have a perpetual license model and a subscription model, but in the Thunder series, the physical appliance does not have a perpetual license model, mainly operating on the subscription model.
PM at Connex Information Technologies
Enhanced integration with third-party tools would be beneficial.
IT Architecture Manager at a government with 10,001+ employees
Fortinet has been a pioneer for enterprise solutions, such as firewalls, SASE, ZTNA, and SD-WAN solutions, and they are in a leader quadrant.
Senior Technical Engineer at Safezone Secure Solutions Private Limited
The limitation of managing all components and the differing versions pose challenges.
Security Network Architect at novonordisc
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.
Senior Network Engineer at SP SYSNET PTE. LTD.
 

Setup Cost

A10 Networks Thunder ADC offers competitive pricing, potentially saving 20-30% compared to competitors, despite some finding support expensive.
Fortinet FortiADC offers competitive, predictable pricing with flexible licensing options, appealing to both small businesses and large enterprises.
I estimate that I can save around 20 to 30 percent of my budget with A10 Networks Thunder ADC.
Head Of Technical And Network Security at Connex Information Technologies
This solution is quite expensive compared to Kemp.
Senior Network Engineer at SP SYSNET PTE. LTD.
 

Valuable Features

A10 Networks Thunder ADC provides high performance, security, cost efficiency, and ease of use with robust load balancing and automation.
Fortinet FortiADC offers features like SSL offloading and load balancing, valued for simplicity, scalability, affordability, and integration.
Application load balancing in A10 Networks Thunder ADC plays a crucial role in improving application reliability during peak periods.
PM at Connex Information Technologies
What really stands out to me about A10 Networks Thunder ADC is how customizable, performant, and automated the platform is.
IT Architecture Manager at a government with 10,001+ employees
I would assess A10 Networks Thunder ADC's load balancing for improving application reliability during peak periods at around 9 out of 10, as GSLB is far better, and we are very satisfied with it.
Head Of Technical And Network Security at Connex Information Technologies
I use server load balancing and employ layer seven features, which provide more granular traffic shaping and detailed logs.
Senior Network Engineer at SP SYSNET PTE. LTD.
When integrated with FortiAnalyzer, it has much more significance.
Senior Technical Engineer at Safezone Secure Solutions Private Limited
The implementation process is straightforward, and cluster implementation is also very easy.
Team Lead at Adapt Information Technologies (Pvt) Ltd
 

Categories and Ranking

A10 Networks Thunder ADC
Ranking in Application Delivery Controllers (ADC)
11th
Average Rating
8.4
Reviews Sentiment
7.0
Number of Reviews
26
Ranking in other categories
No ranking in other categories
Fortinet FortiADC
Ranking in Application Delivery Controllers (ADC)
5th
Average Rating
8.0
Reviews Sentiment
6.7
Number of Reviews
25
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of April 2026, in the Application Delivery Controllers (ADC) category, the mindshare of A10 Networks Thunder ADC is 5.6%, up from 4.9% compared to the previous year. The mindshare of Fortinet FortiADC is 9.3%, down from 10.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Application Delivery Controllers (ADC) Mindshare Distribution
ProductMindshare (%)
Fortinet FortiADC9.3%
A10 Networks Thunder ADC5.6%
Other85.1%
Application Delivery Controllers (ADC)
 

Featured Reviews

reviewer2817921 - PeerSpot reviewer
IT Architecture Manager at a government with 10,001+ employees
Application delivery has improved and security now ensures reliable high‑traffic e‑commerce
A10 Networks Thunder ADC offers several strong features that make it a very competitive solution. First, they provide advanced Layer 4 or Layer 7 load balancing. Another key feature is SSL offloading and encryption handling. A10 Networks Thunder ADC is also highly scalable and flexible. Scalability for A10 Networks Thunder ADC shows up in my day-to-day operations during high-traffic events such as Black Friday. One feature I find really powerful and something underrated about A10 Networks Thunder ADC is A-Flex. Beyond the standard ADC feature, what really stands out to me about A10 Networks Thunder ADC is how customizable, performant, and automated the platform is. A10 Networks Thunder ADC has a significant impact on my organization in several ways. First, it improves application availability and performance. From a security perspective, it helps protect applications against threats such as DDoS attacks. It also has a strong operational impact. In terms of cost, it can lower both CapEx and OpEx.
GANESAN K - PeerSpot reviewer
Senior Technical Engineer at Safezone Secure Solutions Private Limited
Has supported load balancing for medical applications and could benefit from more custom configuration options
Some customers need custom management for handling their applications across the servers. Instead of having a predefined solution, if we had space for custom-based algorithms to load balance the traffic, it would be better. We have faced such cases with A10, where we can leverage many custom scripts and do much more. Even though A10 primarily focuses on SMBs, they have also ventured into the enterprise market. Fortinet has been a pioneer for enterprise solutions, such as firewalls, SASE, ZTNA, and SD-WAN solutions, and they are in a leader quadrant. Therefore, they should have more options. From a pricing perspective, it is expensive.
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Top Industries

By visitors reading reviews
Computer Software Company
9%
Manufacturing Company
9%
Financial Services Firm
8%
Government
7%
Financial Services Firm
10%
Computer Software Company
10%
Government
9%
Comms Service Provider
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business12
Midsize Enterprise5
Large Enterprise13
By reviewers
Company SizeCount
Small Business13
Midsize Enterprise4
Large Enterprise7
 

Questions from the Community

Which is the best DDoS protection solution for a big ISP for monitoring and mitigating?
I would recommend A10 Networks due that it delivers high performance in a small form factor to reduce OPEX with significantly lower power usage, rack space, and cooling requirements compared to oth...
Do you recommend A10 Networks Thunder ADC?
I do recommend A10 Networks Thunder ADC. It's very user-friendly, easy to configure, and flexible. It is a very useful solution - especially now, when a lot of employees are working remotely. I hav...
What is your experience regarding pricing and costs for A10 Networks Thunder ADC?
I estimate that I can save around 20 to 30 percent of my budget with A10 Networks Thunder ADC, though it's not an exact figure.
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 have to look for other ADC's like F5, Imperva, Radware, Fortinet, etc.
Do you recommend Fortinet FortiADC?
I recommend Fortinet FortiADC. My experience with Fortinet has been very positive. Our company has been using it for around five years. We mainly use FortiADC for the load balancing of application ...
What is your experience regarding pricing and costs for Fortinet FortiADC?
Pricing is not considered on our side since we are the implementation team. Our pre-sales team considers the pricing and all the details.
 

Also Known As

Thunder ADC, AX Series
FortiADC Application Delivery Controller, FortiADC
 

Overview

 

Sample Customers

123inkt.nl, Bentley University, Box, Brainshark, Buienradar, Capgemini, CGN/LSN & NAT64, Chengdu Telecom, Club One, Code Ready, CRC Health Group, Cyso, Deutsche Telekom, Earth Class Mail, Excite, FFF Enterprises, Florence County, Framingham State University, From30
Black Gold Regional Schools, Amadeus Hospitality, Jefferson County, Chunghwa Telecom, City of Boroondara, Dimension Data
Find out what your peers are saying about A10 Networks Thunder ADC vs. Fortinet FortiADC and other solutions. Updated: April 2026.
889,955 professionals have used our research since 2012.