A10 Networks Thunder ADC vs HAProxy vs NetScaler comparison

Read 42 HAProxy reviews

7,217 Views
5,485 Comparison Views

91% willing to recommend

Read 107 NetScaler reviews

7,489 Views
6,066 Comparison Views

91% willing to recommend

A10 Networks Thunder ADC

Comparison Buyer's Guide

Download the report

Executive Summary

We performed a comparison between A10 Networks Thunder ADC, HAProxy, and NetScaler based on real PeerSpot user reviews.

Find out what your peers are saying about NetScaler, F5, Microsoft and others in Application Delivery Controllers (ADC).

To learn more, read our detailed Application Delivery Controllers (ADC) Report (Updated: July 2025).

Application Delivery Controllers (ADC)

Download the complete report

Helped 864,574 peers since 2012

Review summaries and opinions

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

Mindshare comparison

As of August 2025, in the Application Delivery Controllers (ADC) category, the mindshare of A10 Networks Thunder ADC is 4.9%, up from 4.9% compared to the previous year. The mindshare of HAProxy is 11.9%, down from 12.7% compared to the previous year. The mindshare of NetScaler is 14.4%, down from 16.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Application Delivery Controllers (ADC)

Featured Reviews

RonaldoDE Melo

Sales Account Executive at L8 Group

Protects connection and servers from direct access with control access feature

The initial setup is very simple. The issue is that it achieves high output across all its features, specifically the output ports. This affects the customer's solution because sometimes, the customer is even aware of the user's activity on certain servers. If you have all the necessary information, we can quickly deploy the solution within two to three days. The size of the Thunder ADC depends on its configuration. For example, the cache converter typically includes more than two rack units, often requiring at least three rack units for adequate space. I rate it a ten out of ten, where one is difficult, and ten is easy.

Read full review

Kaushlendra Singh

Manager - IT Infrastructure and Network at a manufacturing company with 1,001-5,000 employees

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…

Read full review

DEMİRHAN ÇAVUŞOĞLU

Cloud Consultant at Migros Ticaret A.Ş.

A tool for centralized management including inventory and sales tracking

Citrix ADM has the ability to implement policies to tighten security. For instance, you can restrict access to your network from outsiders or lack necessary security measures such as antivirus programs. Additionally, there's the Delivery Controller, which allows for comprehensive monitoring and management tasks such as remote restarts, maintenance, and registration. Another essential component is the Director, which provides detailed insights into sessions, including identifying session failures, connection issues, user lockouts, etc. It presents a list of problems to address, enabling you to click on them and resolve them efficiently.

Read full review

Quotes from Members

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

Pros

"The DNS application firewall and load balancing are very valuable."

"Compared to F5, which I used about six years ago, the A10 is much easier when routing. You don't have to use the wildcard bits to route it between the different segments. It's much less troublesome to configure."

"The most valuable features in A10 Networks Thunder ADC are the ease of configuration, user-friendliness, and simplicity to sell to customers."

"We can control access based on the specific application. If other devices are attempting to directly access the servers, you can block them. Additionally, you can balance the load among servers to optimize performance. For example, utilizing caching can make the application run faster."

"It helps with the efficiency of application deployments and data security."

"A10 explained why the latency dropped significantly on a site that we have."

"A10 Networks Thunder ADC is an easy-to-use and flexible solution."

"A lot of our SSL management is done on the front-end side, so there is one pane of glass for a lot of our security certificates. It gives us visibility. It also falls under when certificates are going to expire. Even for servers that are coming down, we can see how that affects the traffic flow by using the services map."

More A10 Networks Thunder ADC pros

"It improves our scalability and responsiveness services to meet our demanding customer requirements."

"The technical support has been, in one word, perfect. Every time I call, I’m on the phone with a representative within five minutes who is highly skilled and willing to help, whether in the case of critical issues or simple advice."

"The anti-DDOS PacketShield filtering solution (embedded in the physical appliances) as well as the BGP route injection are great features and heavily used."

"Performance configuration options with threads, processes, and core stickiness are very valuable."

"I can simplify configurations of many internal services (e.g. Web server configs) by moving some elements (like SSL) to HAProxy. I can also disable additional applications, like Varnish, by moving traffic shaping configurations to HAProxy."

"The most valuable thing for me is TCP/IP Layer 4 stuff you can do with HAProxy. You can go down to the protocol level and make decisions on something."

"Load balancing is valuable, and we are also using the WAF feature."

"The VRRP redundancy is also a mission-critical feature that works seamlessly. I can bring down a server live with minimal downtime because of this."

More HAProxy pros

"I like the monitoring ability as it enables me to identify when an internal (load-balanced) resource is having issues before it becomes a problem in production."

"Easy, user-friendly setup with content switching and integrated caching features."

"Its flexibility, agility, and robustness are the most valuable. Its management and implementation are also quite easy."

"The web application firewalling component is a powerful feature."

"The solution can be configured very granularly and has good control over security."

"This solution increases the backend network service performance, which is one of the things that we like the most."

"The load balancing is one of the most valuable features."

"I like the solution's simplicity compared to Citrix's on-prem solutions."

More NetScaler pros

Cons

"The solution should add automation features in the next release."

"There is two-factor authentication built-in, but it could be more robust."

"They need to make the user interface (GUI) a bit more usable and intuitive. Some features can be a little difficult to find at times. Sometimes, the workflow in the GUI doesn't match the workflow of an actual workflow. E.g., if I want to create a load balancer application, sometimes you've got to do things a bit out of order in the GUI in order to make it work right."

"A graphical dashboard for analyzing performance is needed."

"The interface and integrated custom applications can be a bit difficult."

"The user interface is not as pretty as it could be."

"Currently, the solution's WAF features are fewer. They should consider increasing their WAF features."

"The costs can be quite high."

More A10 Networks Thunder ADC cons

"We've changed solutions as it doesn't fit with our current needs."

"If nbproc = 2, you will have two processes of HAProxy running. However, the stats of HAProxy will not be aggregated, meaning you don't really know the collective status in a single point of view."

"The only area that I can see needing improvement is the management interface, since it is pretty much all through the CLI or configuration. A GUI/web interface could be helpful for users who are not as experienced in the Linux shell. However, HAProxy does have another product that we evaluated called ALOHA, which has a web front-end, but we found it did not meet our needs."

"They should introduce one feature that I know many people, including me, are waiting for: HAProxy should have provide hot-swipe for back-end servers. Also, they need a more detailed GUI for monitoring and configuration."

"The solution can be improved by controlling TCP behavior better and mandating to clients what the expected outcome must be in order to avoid receiving contestant timeout logs."

"The configuration should be more friendly, perhaps with a Web interface. For example, I work with the ClusterControl product for Severalnines, and we have a Web interface to deploy the HAProxy load-balancer."

"There are three main areas to improve: 1) Make remote management more modern by adding API. 2) Propose a general HA solution for HAProxy (no I'm using keepalived for this). 3) Thread option should be a bit more stable."

"I would like to see better search handling, and a user interface, with a complete functional graphical unit"

More HAProxy cons

"The setup for Citrix NetScaler has room for improvement. It could be easier."

"Technical support could be improved."

"Should offer more flexible cost-effective licensing for small to medium sized organizations."

"I am not an expert in this solution, but simplicity and user-friendly interfaces are crucial for me. I would appreciate advice from Citrix, particularly in the form of an interactive guide for API protection. It would be helpful if they could provide specific points and recommendations for cybersecurity, indicating areas that need attention or improvement. I find such interactive guidance valuable."

"Citrix ADC can be really complex. It isn't very simple like some other appliances that I've worked with. You need a lot of skill and experience to manage it. I'm not talking about a year or two. You need at least four years to understand it very well. It is not that easy to learn. They should make it a lot simpler for users to understand the management of it. They can also provide some additional training. The material they have on the site is not sufficient enough for you to understand how to manage it. Their training is expensive, and not everyone has the funds and experience for it. Citrix isn't very popular around these parts of the world. So, it can use some more marketing, sales, enlightenment, and advertisement. These could bring more market for them. Basically, there are just a few companies that really go for Citrix. Most of the companies go for VMware because they marketed themselves more than Citrix. There isn't much difference between Citrix and VMware. VMware is a little more robust than Citrix. Citrix has focused more on desktops rather than server virtualization, and that's the advantage VMware has over Citrix. Citrix also needs to educate and inform users about the infrastructure that is supported with a version. Currently, if the customers don't look at the datasheet, they might miss this important information."

"Citrix should improve the documentation. It is not really clear how to set up many features to our advantage. When we setup Citrix NetScaler ADC, we have to figure it out by ourselves without a lot of documentation."

"The WAF component needs to be simplified so that it is easier to use."

"The licensing model and technical support of the solution could be improved."

More NetScaler cons

Pricing and Cost Advice

"The price of A10 Networks Thunder ADC depends on capacity and the customer's requirement. They have several offerings. They have different price models and options to choose from. Additionally, you need to subscribe to support for the hardware appliances."

"The price of the maintenance support is too expensive."

"We previously had F5 and switched because of costs."

"The pricing is a third of the price of the F5 competition."

"As for the initial investment in the hardware, F5 and A10 are quite similar now. For the current A10 solution, the initial cost was about $36,000. As for annual support, the F5 solution would be between $10,000 and $12,000, while the A10 is $2,200 a year for support."

"For the hardware and license, we paid $35,000 per box, which was a one-time cost. Then, for the Gold Support on the two boxes, we pay $9400 annually."

"One of the main reasons for switching away from Cisco was the licensing model. A10 gives you global server load balancing for free, while Cisco charged a significant licensing fee for that."

"You get a lot more for your dollar with A10."

More A10 Networks Thunder ADC pricing and cost advice

"We are using HAProxy as an open-source."

"The price is well worth it. HAProxy Enterprise Edition paid for itself within months, simply due to the resiliency it brings. It was a bit more expensive than we were originally interested in paying, but we are thankful we chose to go with HAProxy."

"The only cost is for the image manager, who is responsible for uploading the image, and that is trivial."

"If you don't have expertise then go with the licensed version. Otherwise, open-source is the best solution."

"HAProxy is free open-source software."

"Very good value for the money. One of the simplest licensing schemes in this category of products."

"When it comes to pricing HAProxy is free."

"HAProxy is free software. There are optional paid products (support/appliances)."

More HAProxy pricing and cost advice

"We get value for money. Its price is fair. I don't think it is overpriced."

"On a scale from one to ten, where one is cheap, and ten is expensive, I rate the solution's pricing an eight or nine out of ten."

"I rate the pricing an eight out of ten since it is expensive."

"The pricing for Citrix Web App and API Protection is unreasonable. I don't know the exact price, but I heard it's tens of thousands and it's a bit too much for the small country I live in."

"Licensing is adequate. I wanted to have a more prominent license, but until I do they don't give enough support. The additional cost would be too much."

"The licenses for this product are payable as a yearly subscription, and carry a high price-point. The subscription scheme is quite complicated, and costs will increase with each additional feature that is required, outside of the basic setup."

"We are quite happy with price. It's not too high."

"It all depends on the features that will be used and the number of accesses."

More NetScaler pricing and cost advice

See which vendors are best for you

Use our free recommendation engine to learn which Application Delivery Controllers (ADC) solutions are best for your needs.

See recommendations

864,574 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Computer Software Company

19%

Financial Services Firm

11%

University

Government

Computer Software Company

18%

Financial Services Firm

10%

Comms Service Provider

Manufacturing Company

Computer Software Company

15%

Financial Services Firm

10%

Government

10%

Manufacturing Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

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 signi...

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 usefu...

What do you like most about A10 Networks Thunder ADC?

A10 Networks Thunder ADC is an easy-to-use and flexible solution.

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 is your experience regarding pricing and costs for HAProxy?

HAProxy is an open-source solution.

What do you like most about Citrix ADC?

The most valuable feature for us is the application firewalling in Citrix NetScaler, ensuring only valid traffic ente...

What is your experience regarding pricing and costs for Citrix ADC?

After deployment, Citrix Netscaler shifted to a subscription-based license scheme for support, which is slightly more...

What needs improvement with Citrix ADC?

Citrix NetScaler is a robust product, but mastering it requires significant learning and training due to its complexi...

F5 BIG-IP Local Traffic Manager (LTM) vs A10 Networks Thunder ADC

Comparisons

Compared 25% of the time

Fortinet FortiADC vs A10 Networks Thunder ADC

Compared 10% of the time

Kemp LoadMaster vs A10 Networks Thunder ADC

Compared 8% of the time

Radware Alteon vs A10 Networks Thunder ADC

Compared 7% of the time

Array APV Series vs A10 Networks Thunder ADC

Compared 3% of the time

More A10 Networks Thunder ADC Competitors

Microsoft Azure Application Gateway vs HAProxy

Compared 13% of the time

Istio vs HAProxy

Compared 11% of the time

Envoy vs HAProxy

Compared 11% of the time

F5 BIG-IP Local Traffic Manager (LTM) vs HAProxy

Compared 10% of the time

Barracuda Load Balancer ADC vs HAProxy

Compared 1% of the time

More HAProxy Competitors

Microsoft Azure Application Gateway vs NetScaler

Compared 9% of the time

Fortinet FortiADC vs NetScaler

Compared 8% of the time

F5 BIG-IP Local Traffic Manager (LTM) vs NetScaler

Compared 8% of the time

NGINX Plus vs NetScaler

Compared 7% of the time

Radware Alteon vs NetScaler

Compared 6% of the time

More NetScaler Competitors

Product Reports

A10 Networks Thunder ADC

Download A10 Networks Thunder ADC product report

Download HAProxy product report

Download NetScaler product report

Also Known As

Thunder ADC, AX Series

HAProxy Community Edition, HAProxy Enterprise Edition, HAPEE

Citrix ADC, Citrix NetScaler VPX, NetScaler Console, NetScaler Web Application Firewall

Overview

A10 Networks Thunder ADC is a dynamic application delivery controller and advanced load balancer. Thunder ADC is a value-added solution provided by A10 Networks specializing in robust, trusted, scalable application services for cloud, hybrid, edge cloud, and on-premise environments focused on improving business processes and keeping infrastructures safe. The solution consistently provides server availability, improves content delivery, and protects at-risk applications. A10 Networks Thunder ADC easily controls hybrid and multi-cloud deployments using a Polynimbus strategy to minimize difficulties and costs for IT processes, facilitating overall improved business results.

A10 Networks Thunder ADC is effective for small to medium businesses (SMBs) to large enterprises. Service providers and cloud operators are all using A10 Network ADC to manage their large and fast-growing group of business-critical applications.

A10 Networks Thunder ADC supplies L4-7 load balancing with numerous layers of security using DNS and web app firewalls, comprehensive support for advanced encryption, single sign-on (SSO) authentication, and high-performance Perfect Forward Secrecy and Error Correction Code (PFS/ECC). Thunder ADC is designed upon A10 Networks Advanced Core Operating System (ACOS®) platform to provide consistent, efficient application performance and trusted security for any environment.

A10 Networks Thunder ADC Benefits

Consistently accessible: A10 Networks Thunder ADC employs numerous load balancing protocols to evenly distribute workloads to all servers and works to ensure constant application functionality. User requests are monitored to ensure loads are directed to the appropriate server so that there is always a proper response delivery to content. This process ensures the applications are consistently available.
Global Server Load Balancing (GSLB): To ensure business processes are fully optimized at all times, A10 Networks Thunder ADC employs a dynamic Global Server Load Balancing (GSLB) process to augment server load balancing capabilities throughout global data centers for high availability and improved user experience and application tolerance.
Fast content delivery: A10 Networks Thunder ADC conquers the general WAN latencies, chatty policies, and redundant software programs to ensure quick and responsive service. Employees receive a fast, excellent end-user experience while the organization's business leaders get exceeded SLA mandates and increased productivity with teams working remotely and a step up on the competition.

A10 Networks Thunder ADC Features

Detailed Analytics: When deployed with A10 Networks Harmony Controller, Thunder ADC delivers a large selection of detailed aggregate and per-request reports in real time. The reports include popular URLs, error and health indicators, latencies, and end-to-end response times. The data is further dissected to deliver per-app reporting, availability alerts, and performance.
API Coverage: Thunder ADC utilizes A10 Networks REST-based aXAPIs to structure all features with 100 percent API coverage. The resulting interface is then used to seamlessly integrate custom or third-party management solutions, such as VMware or other SDN platforms, OpenStack, Microsoft SCVMM, or other cloud orchestration systems. There are also software plug-ins available for private clouds utilizing VMware’s vRealize Orchestrator.
Comprehensive Management Controls: Thunder ADC is fully supported by A10 Networks Harmony Controller and can be deployed in software or as a software-as-a-service (SaaS). This controller functions as a native management platform that organizes and distributes application-centric service protocols and configuration data to numerous Thunder appliances and device cluster infrastructures throughout numerous multi-cloud environments. Users can instantly identify, audit and track every appliance using critical operational metrics, such as CPU, disk usage, device partitions, and end users. The A10 Networks Harmony Controller will also complete configuration backups and restore operations, and will schedule regular software upgrades.

A10 Networks

HAProxy is considered by many in the industry to be one of the fastest and most popular and trusted software load balancer products in the marketplace today. Organizations are able to immediately deploy HAProxy solutions to enable websites and applications to optimize performance, security, and observability. HAProxy solutions are available to scale to any environment.

HAProxy is an open-source product and has a robust, active, reliable community. The solutions are continually tested and improved on by the community. HAProxy offers a dynamic design to support the most modern architectures, microservices, and deployment environments (appliances, containers, virtual, and cloud).

HAProxy utilizes a cloud-native protocol, which makes it a complete solution for cloud services such as Red Hat OpenShift, OVH, Rackspace, Digital Ocean, Amazon Web Services (AWS), and more. It also can be used as the reference load balancer in OpenStack.

HAProxy Products

HAProxy One: This is a next-gen end-to-end application delivery platform created to secure and streamline modern application architectures. It offers a complete suite of solutions, such as application delivery software, turnkey, and appliance services observed and administered through a central control plane. The product supplies application acceleration, CDN, DDoS, bot management, WAF capabilities, and load balancing.

HAProxy Fusion Control Plane: This product enables organizations to streamline workflows, arrange traffic routing and security protocols, enhance the speed of delivery, and scale out of the organization’s applications. HAProxy Fusion Control Plane offers an intuitive user interface to observe and control the complete product lineup and API for administering numerous fleets of HAProxy Enterprise servers, either in the cloud or on premises.

HAProxy Edge: This product offering is an application delivery network (ADN) that provides a broad array of turnkey application services with amazing scale and complete visibility. Services include application and content acceleration, advanced security, and load balancing.

HAProxy ALOHA Hardware or Virtual Load Balancer: This product is a virtual load balancer or plug-and-play hardware constructed upon HAProxy Enterprise that is designed to support proxying at Layer 4 and Layer 7. It has a user-friendly GUI, simple deployment, and no limit on backend servers, making it a complete product for organizations desiring a reliable system to provide high-end load distribution for critical services.

HAProxy Enterprise Kubernetes Ingress Controller: This product is designed to facilitate smooth traffic flow into a Kubernetes cluster. It is able to automatically discover anomalies and changes in an organization's Kubernetes infrastructure and provide precise distribution of traffic to healthy pods, with no downtime caused by poor pod health or scaling changes. The product comes with an embedded WAF to optimize the security of an organization’s applications running in Kubernetes.

HAProxy Enterprise: This product is the enterprise-class edition of HAProxy offering a dynamic and sturdy code base with next-generation features, an enterprise suite of add-ons, professional services, and trusted support.
- Cluster-wide tracking and rate limiting
- Advanced DDoS and bot management
- Web application firewall
- Reliable expert support
- High performance modules
- Device detection and geolocation
- Real-time dashboard

Reviews from Real Users

“Having the right load balancing solution – which is what HAProxy is – and protection in place gives organizations peace of mind.” - Nathanel S., Platform Architect at SES

“I use HAProxy for individuals who can not buy low balancers. I built NFV in a box and send individuals a pathway into an HAProxy VM. The setup was not difficult; it usually takes a day to complete for a VPC. When it comes to pricing, HAProxy is free.” - Nasir O., Network & Cloud Architect at Koala Compute Inc.

One platform for a consistent application delivery and security experience because nobody has time to learn multiple systems to manage ADC deployments. NetScaler is built with a single code base using a software-based architecture, so no matter which ADC form factor you choose — hardware, virtual machine, bare metal, or container — the behavior will be the same.

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

Booking.com, GitHub, Reddit, StackOverflow, Tumblr, Vimeo, Yelp

ABB Schweiz, Aer Lingus, AIDS Healthcare Foundation, Amnet Technology Solutions, Aramex International, Ascenty, Atos, Autodesk

Application Delivery Controllers (ADC)