⚡ Load Balancers

A load balancer is a software program or device that distributes network traffic across a number of "backend" servers, providing improved scaling and network resilience.

According to our statistics, load balancers are used on 6.3% of all websites.
93.5% of these sites use only one load balancer, 6.3% use two, and 0.2% use three or more of them.

⭐ Most Popular in 2026

The following chart shows the leading load balancers in 2026, based on market share.

The most popular is Varnish with an impressive share of 31.2%, followed by Google Cloud Load Balancer with 18.7% and AWS Elastic Load Balancer with 17.9%.

You can also drill down by country:

🚀 Country Highlights

Here is a list of load balancers that are especially popular in certain countries.
Differences between global and country rankings are shown in parentheses.

Google Cloud Load Balancer is #1 in the British Virgin Islands ^(-1)
AWS Elastic Load Balancer is #1 in Japan ^(-2)
F5 BIG-IP is #1 in Turkey ^(-3)
Application Request Routing is #1 in Ireland ^(-4)
Apache Traffic Server is #1 in the Czech Republic ^(-11)
Envoy is #4 in Brazil ^(-2)
Sucuri CloudProxy is #4 in India ^(-3)
Azure Front Door is #5 in the United Kingdom ^(-3)

✨ Best Load Balancers

Below is a more detailed list of 18 load balancers we track, 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	31.2%
2	Google Cloud Load Balancer Mountain View, California, United States Distributes user traffic across virtual machine instances in the same region.	18.7%
3	AWS Elastic Load Balancer Seattle, Washington, United States Automatically distributes incoming traffic across multiple targets, such as EC2 instances, containers, and IP addresses. Free$$$	17.9%
4	F5 BIG-IP Seattle, Washington, United States An enterprise-grade application delivery controller and full reverse proxy platform for managing, securing, and optimizing web and API traffic. $3,200+/year	9%
5	Application Request Routing Redmond, Washington, United States A module for Internet Information Server that can load-balance between multiple servers in a server farm.	7.7%
6	Envoy San Francisco, California, United States A high-performance, open source edge and service proxy designed for cloud-native applications and large microservice "service mesh" architectures. FreeOpen source	6.2%
7	Sucuri CloudProxy Tempe, Arizona, United States A website application firewall that stops bad actors, speeds up load times, and increases website availability.	4.8%
8	Azure Front Door Redmond, Washington, United States A cloud content delivery network service that offers Layer 7 load-balancing capabilities. $35+/month	3.6%
9	Azure Application Gateway Redmond, Washington, United States A managed web traffic load balancer and full reverse proxy that enables scalable, highly available, and secure web application delivery on Azure. $0.0255+/hour	2.9%
10	Heroku Vegur San Francisco, California, United States Open-source proxy and load balancing software. FreeOpen source	1.4%
11	Ivanti vADC South Jordan, Utah, United States A software-based application delivery controller solution that delivers applications with predictable performance and strong multi-layered security and includes Virtual Traffic Manager, Services Director and Web Application Firewall. $$$	1.1%
12	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	0.8%
13	HAProxy Newton, Massachusetts, United States A high-performance reverse proxy and load balancer for TCP- and HTTP-based applications. FreeOpen source$$$	0.6%
14	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	0.3%
15	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	0.3%
16	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	0.3%
17	Squid Westminster, Colorado, United States A caching proxy for the web that supports HTTP, HTTPS, FTP, and more. FreeOpen source	0.1%
18	Oracle Traffic Director Austin, Texas, United States A high-throughput, low-latency layer-7 software load balancer for load balancing HTTP/S and TCP traffic to the application tier.	0.002%

👉 See Also

🔗 Links
- Load balancing

Data is based on the analysis of 3,040,870 websites.
Statistics were last calculated on February 3, 2026.
For details, see our methodology and disclaimer.