The 5 Best Open Source Load Balancers

1

Traefik

Traefik bills itself as the “cloud native edge router.” It’s a modern microservices-focused application load balancer and reverse proxy written in Golang. With its emphasis on support for several modern container orchestration platforms, batteries-included logging, and several popular metric formats, Traefik is a top choice for container-based microservices architectures.

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2

nginx

Nginx is a name that should be instantly recognizable to anyone involved in web application engineering. This tool offers load balancing capabilities via its ngx_http_upstream_module. A well-established, widely supported option, Nginx offers highly scalable performance out of the box and can be extended with additional modules like Lua.

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3

Seesaw

Seesaw is another open-source load balancer written in Golang. It was originally created by Google SREs to provide a robust solution for load balancing internal Google infrastructure traffic. When choosing Seesaw, you’re getting the collective engineering acumen of Google’s powerful SRE cohort in an open-source ecosystem.

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4

Haproxy

HAProxy is another common name in the web ecosystem. HAProxy offers reverse proxying and load balancing of TCP and HTTP traffic. When you choose HAProxy, you’re choosing a high-performance, well-established solution.

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5

Neutrino

A relatively lesser-known offering, Neutrino is a Scala-based software load balancer originally developed by eBay. Neutrino’s strength lies in the broad compatibility of its runtime environment, the JVM.

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