Check out our list of free Load Balancing . Products featured on this list are the ones that offer a free trial version. As with most free versions, there are limitations, typically time or features.
If you'd like to see more products and to evaluate additional feature options, compare all Load Balancing to ensure you get the right product.
NGINX, Inc. is the company behind NGINX, the popular open source project trusted by more than 400 million sites. We offer a suite of technologies for developing and delivering modern applications. The NGINX Application Platform enables enterprises undergoing digital transformation to modernize legacy, monolithic applications as well as deliver new, microservices‑based applications. Companies like Netflix, Starbucks, and McDonalds rely on NGINX to reduce costs, improve resiliency, and speed innov
Traefik is the leading open source cloud-native load balancer and ingress controller for HTTP and TCP-based applications that is easy, dynamic, automatic, fast, full-featured, production proven, provides metrics, and integrates with every major cluster technology. Built on top of Traefik, Traefik Enterprise Edition brings exclusive distributed features with high performance capabilities that enable to load balance applications, secure services with authentication and encryption, and provide end
Varnish Software’s powerful caching technology helps the world’s biggest content providers deliver lightning-fast web and streaming experiences for huge audiences, without downtime or loss of performance. Our solutions combine open-source flexibility with enterprise robustness to speed up media streaming services, accelerate websites and APIs, and enable global businesses to build custom CDNs, unlocking unbeatable content delivery performance and resilience.
HashiCorp Consul provides a distributed service networking layer to connect, secure, and configure services across any runtime platform. Consul service discovery enables service-to-service communication in modern microservices infrastructures with a service registry that keeps a real-time list of services, their location, and their health. Consul service mesh provides a dedicated networking layer to handle microservice networking challenges, including service discovery, service segmentation, ro
HAProxy is the world’s fastest and most widely used open source software load balancer and application delivery controller. Built on top of HAProxy, HAProxy Enterprise brings enterprise class features, services and premium support.
The Enterprise VA R20 delivers awesome load balancing power at an incredible price. This virtual appliance offers unrestricted throughput and bandwidth. You’ll probably never need to upgrade the license, but if you do, we provide a seamless upgrade path.
Tricentis Flood is a distributed, cloud load testing platform that helps teams test, analyze and improve the way their applications scale — with seamless integration across the DevOps pipeline. Flood helps you deliver the reliability and performance expected by your users and customers.
LiteSpeed Web ADC delivers performance advantages against hardware and software competitors at higher loads. Cutting-edge technologies and advanced security come together in a best-of-breed solution, designed to work within your existing infrastructure.
Snapt is a modern software-only load balancing, acceleration, and security solution that’s built for flexibility, performance and virtualization. Our industry leading software application delivery controller will ensure your business-critical services stay online, perform quickly and are secure.
Load balancing software is designed to allow websites and applications to run, unfaltering, through hundreds, thousands, and even millions of simultaneous connections. By considering numerous rules, methods, and conditions, load balancing solutions work to ensure no servers within a server cluster or server pool become overloaded.
Traffic makes load balancing necessary. As servers experience higher traffic, response times can begin to slow down, resulting in a worse end-user experience. Also, continuous strain on servers can cause permanent hardware damage, meaning downtime might lead to hardware repair or replacement costs (in addition to other downtime-related revenue losses). Load balancing helps to mitigate the likelihood of these issues, acting as a gatekeeper for incoming server connection requests to ensure no single server or server pool gets overloaded.
Because server failures can still happen even with load balancing in place, most solutions will either offer backup solutions in conjunction with load balancing or they’ll be designed to integrate with backup solutions seamlessly. This is an extra layer of protection for companies’ server stacks and data.
Key Benefits of Load Balancing Software
The higher the traffic coming into a company’s website, applications, or servers, the more beneficial it is for the company to have some sort of load balancing solution in place.
Smooth Functionality — This is the reason load balancing software exists. By equally distributing server load over several members of the server pool, load balancing solutions create smoother functionality in server access, webpage loading, and application interactions.
Dynamics — Load balancing software is built for handling dynamic needs. Low traffic time? Connections are handled only by the servers that are absolutely necessary to have online dealing with requests. Influx of high traffic? Bring servers online to help handle the stress and equally distribute the incoming connections so that end-user experiences are all fluid and without disruption.
End-User Satisfaction — Nothing drives end users away from your website or application quite like having a bad user experience. Slow loading, slow responses, and page failures can dissuade users from returning and make your company’s employees reluctant to use your company’s own infrastructure. Load balancing solutions help smooth the overall user experience, preventing these frustrations.
Load balancing software will be used mainly by server administrators and IT teams that get involved with server traffic handling. Because the software is specifically focused on mitigating server traffic, load balancing solutions don’t have much use outside these teams.
Load balancing methods focus less on specific types of software and more on specific ways to distribute traffic. The typical load distribution methods are as follows.
Random Assignment — As the name suggests, random assignment takes an incoming connection and assigns it from the client side to a server from the server pool. This distribution relies on the mathematical law of large numbers, which implies that, when a large enough volume randomly assigns values among a set, the distribution of that volume will be about equivalent.
Round Robin — In this method, every server in the server pool has its own IP address but each is uniquely linked to a master IP address for server calls. When a server call is made, that call is assigned through the master IP address to a unique server in order, yielding the "round robin" name.
Source IP Hash — IP hashing relies on the IP address from the incoming request to determine which server handles the connection. Server assignment depends on the number of servers available and rules surrounding the hash key that is generated by the IP hashing software.
Least Connection — Another self-explanatory name, the "least connection" method of load balancing takes into account the number of connections to each server as opposed to the active server workload. Incoming connections to the server pool are assigned automatically to the server with the least number of active connections.
These are core features for all load balancing software.
Request Distribution — Uses one or more distribution methods to equally allocate connection requests among several servers.
Scaling — Adapts the number of servers being used for load distribution based on the amount of incoming traffic.
These features may not apply to all load balancing solutions but are offered by some.
DDoS Protection — Offers security settings to help prevent distributed denial of service (DDoS) attacks on a company’s servers.
Asymmetric Load Distribution — Allows companies to manually denote some servers to take a lesser share of the load. This is beneficial if a company is using older servers alongside newer ones or if the overall health of some servers is not as great as that of others.
Server Health Monitoring — Runs periodic checks on application servers to verify the overall functionality of each. This helps make sure that well-functioning servers take the brunt of traffic, if need be.
Asymmetric Balancing — Certain methods of load balancing can lead to an unequal distribution of traffic. IP hashing, for example, can strain certain servers over others because of the call sources for connection requests. Round robin might create undue strain on certain servers due to average connection resource consumption being higher on some servers in the list than others. Each method has the possibility of presenting with an occasional unbalancing.
Improper Scaling — Underscaling and overscaling balancing needs can create different issues. Obviously, when fewer servers are being used than are necessary, there is an overall slower end-user experience and the potential to harm physical infrastructure. When overscaled, though, more resources are being used than would be required, which can cause energy waste.