⚡ Load Balancers in the United Kingdom

Load balancers are software components or network devices that distribute incoming traffic across multiple backend servers, improving application availability, scalability, and fault tolerance by preventing any single server from becoming a bottleneck.

The United Kingdom of Great Britain and Northern Ireland (UK) is a Western European country with a population of over 67 million people.

According to our statistics, load balancers are detected on 7.3% of websites from the United Kingdom.

Statistics based on 170K+ analyzed websites. About this data

⭐ Most Popular in 2026

The following chart shows the top load balancers in the United Kingdom in 2026, based on market share.

The most popular is Varnish with an impressive share of 30.3%, followed by Google Cloud Load Balancing with 18.3% and AWS Elastic Load Balancer with 17.2%.

🚀 Highlights

Here is a list of the top load balancers that are more popular in the United Kingdom than worldwide.
Differences between global and country rankings are shown in parentheses.

4. Application Request Routing ^(-1)
5. Azure Front Door ^(-3)
8. Azure Application Gateway ^(-1)
10. Heroku Vegur ^(-1)
11. Ivanti vADC ^(-1)
12. HAProxy ^(-2)
14. Barracuda Load Balancer ADC ^(-1)
16. Squid ^(-2)

✨ Best Load Balancers

Below is a more detailed list of 18 load balancers used on sites from the United Kingdom, ranked by their market share.

Rank	Name	Market share
1	Varnish Stockholm, Sweden An open-source web application accelerator, also known as a caching HTTP reverse proxy. FreeOpen source$1,500+/year	30.3%
2	Google Cloud Load Balancing Mountain View, California, United States A managed load balancing service that distributes application traffic across virtual machines and containers on Google Cloud. $0.025+/unit/hour	18.3%
3	AWS Elastic Load Balancer Seattle, Washington, United States AWS Elastic Load Balancer automatically distributes incoming traffic across multiple targets, such as EC2 instances, containers, and IP addresses. Free$$$	17.2%
4	Application Request Routing Redmond, Washington, United States A module for Internet Information Server that can load-balance between multiple servers in a server farm.	13.7%
5	Azure Front Door Redmond, Washington, United States A cloud content delivery network service that offers Layer 7 load-balancing capabilities. $35+/month	5.6%
6	Envoy San Francisco, California, United States A high-performance, open-source edge and service proxy designed for cloud-native applications and large microservice "service mesh" architectures. FreeOpen source	5.2%
7	F5 BIG-IP Seattle, Washington, United States An enterprise-grade application delivery controller and full reverse proxy platform for managing, securing, and optimizing web and API traffic. $3,200+/year	4.8%
8	Azure Application Gateway Redmond, Washington, United States A managed web traffic load balancer and full reverse proxy that enables scalable, highly available, and secure web application delivery on Azure. $0.0255+/hour	4.4%
9	Sucuri CloudProxy Tempe, Arizona, United States A website application firewall that stops bad actors, speeds up load times, and increases website availability.	3.8%
10	Heroku Vegur San Francisco, California, United States Open-source proxy and load balancing software. FreeOpen source	1.3%
11	Ivanti vADC South Jordan, Utah, United States A software-based application delivery controller solution that delivers applications with predictable performance and strong multi-layered security and includes Virtual Traffic Manager, Services Director and Web Application Firewall. $$$	0.8%
12	HAProxy Newton, Massachusetts, United States A high-performance reverse proxy and load balancer for TCP- and HTTP-based applications. FreeOpen source$$$	0.8%
13	Google Front End Mountain View, California, United States Google's globally distributed reverse proxy that accepts client connections at the network edge and routes requests to Google services. $$$	0.8%
14	Barracuda Load Balancer ADC Campbell, California, United States A unified high-performance platform that helps organizations achieve their availability, acceleration, application control, and application security objectives. $7,000+/year	0.2%
15	Apache Traffic Server Wilmington, Delaware, United States A fast, scalable, and extensible web proxy cache that improves performance by caching frequently accessed information at the edge of the network. FreeOpen source	0.2%
16	Squid Westminster, Colorado, United States A caching proxy for the web that supports HTTP, HTTPS, FTP, and more. FreeOpen source	0.2%
17	Kong Gateway San Francisco, California, United States An API gateway that manages, secures, and routes API traffic using a cloud-native, platform-agnostic architecture. FreeOpen source$105+/month	0.1%
18	NetScaler Fort Lauderdale, Florida, United States An application delivery and security platform that provides high-performance load balancing, application delivery, and security solutions. $11,000+/year	0.05%

👉 See Also

🌎 Load Balancers in other countries

🗃️ About This Data

We evaluate the popularity of technologies based on the number of websites where we detect their usage.
Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
This report is based on the analysis of 170,175 websites from the United Kingdom.
We currently track the presence of 19 load balancers across the web.
Of these, 18 were detected on websites from the United Kingdom.
Statistics were last calculated on August 4, 2026.
For more details, see our methodology and disclaimer.