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The Reliable, High Performance TCP/HTTP Load Balancer
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What is HAProxy?

HAProxy (High Availability Proxy) is a free, very fast and reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications.
HAProxy is a tool in the Load Balancer / Reverse Proxy category of a tech stack.

Who uses HAProxy?

642 companies reportedly use HAProxy in their tech stacks, including Instagram, Twitter, and reddit.

1436 developers on StackShare have stated that they use HAProxy.

HAProxy Integrations

Datadog, Netdata, Tutum, Honeycomb, and Keepalived are some of the popular tools that integrate with HAProxy. Here's a list of all 8 tools that integrate with HAProxy.

HAProxy Alternatives & Comparisons

What are some alternatives to HAProxy?
nginx [engine x] is an HTTP and reverse proxy server, as well as a mail proxy server, written by Igor Sysoev. According to Netcraft nginx served or proxied 30.46% of the top million busiest sites in Jan 2018.
A modern HTTP reverse proxy and load balancer that makes deploying microservices easy. Traefik integrates with your existing infrastructure components and configures itself automatically and dynamically.
Originally built at Lyft, Envoy is a high performance C++ distributed proxy designed for single services and applications, as well as a communication bus and “universal data plane” designed for large microservice “service mesh” architectures.
Squid reduces bandwidth and improves response times by caching and reusing frequently-requested web pages. Squid has extensive access controls and makes a great server accelerator. It runs on most available operating systems, including Windows and is licensed under the GNU GPL.
Varnish Cache is a web application accelerator also known as a caching HTTP reverse proxy. You install it in front of any server that speaks HTTP and configure it to cache the contents. Varnish Cache is really, really fast. It typically speeds up delivery with a factor of 300 - 1000x, depending on your architecture.
See all alternatives

HAProxy's Followers
1668 developers follow HAProxy to keep up with related blogs and decisions.