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HAProxy

The reliable, high-performance TCP/HTTP load balancer

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HAProxy is a TCP/HTTP load balancer and reverse proxy that distributes traffic across backend servers and provides high availability for TCP and HTTP-based applications. It handles proxying, load balancing, and traffic management for services that need to remain reachable and responsive.

The software supports HTTP/2 and HTTP/3, QUIC, SSL/TLS with ACME certificate management, dynamic backends, health checks, stick-tables, and OpenTelemetry observability. It includes HATop for ncurses monitoring, the Herald load feedback agent, haproxystats for stats collection, and Docker images for Alpine, Debian, and RHEL, along with Debian/Ubuntu packages and performance packages built against AWS-LC.

HAProxy is available as open-source software with multiple release branches, including LTS and stable versions, and is distributed through source repositories, packages, and container images. Commercial support and enterprise features are offered separately.

12 alternatives to HAProxy

Ranked by how well each tool replaces HAProxy: shared features, audience, price and popularity.

  1. HAProxy Enterprise Edition

    Powering the World's Busiest Applications

    Covers 2 of 15 key features.

    69 out of 100 match—

  2. Scaleway

    European Cloud & AI provider (as described on the site)

    Covers 2 of 15 key features.

    61 out of 100 match—

  3. Apache Helix

    A cluster management framework for partitioned and replicated distributed resources

    Covers 1 of 15 key features and has a free plan.

    Free planOpen source
    61 out of 100 matchContact sales

  4. Apache Hadoop

    Open-source software for reliable, scalable, distributed computing

    Covers 1 of 15 key features and has a free plan.

    Free planOpen source
    61 out of 100 matchFree

  5. Kemp LoadMaster

    Load Balancer For Always-On Application Experience

    Covers 2 of 15 key features.

    59 out of 100 matchContact sales

  6. Proxmox

    Powerful open-source server solutions

    Covers 1 of 15 key features and has a free plan.

    Free planOpen source
    59 out of 100 matchContact sales

  7. Apache CloudStack

    Apache CloudStack — Infrastructure for Virtual Machines and Bare Metal

    Covers 1 of 15 key features and has a free plan.

    Free planOpen source
    58 out of 100 matchFree

  8. Ubuntu

    Enterprise open source operating system published by Canonical

    Covers 2 of 15 key features and has a free plan.

    Free planOpen source
    57 out of 100 matchContact sales

  9. Apache ActiveMQ

    Multi-protocol, Java-based open source message broker.

    Covers 1 of 15 key features.

    Open source
    56 out of 100 match—

  10. OpenResty

    Open-source web platform that integrates an enhanced Nginx core with LuaJIT.

    Covers 1 of 15 key features and has a free plan.

    Free planOpen source
    56 out of 100 matchContact sales

  11. Memcached

    Distributed memory object caching system.

    Covers 1 of 15 key features and has a free plan.

    Free planOpen source
    56 out of 100 matchContact sales

  12. Cloudian

    Object Storage Engineered for AI

    Covers 2 of 15 key features.

    55 out of 100 matchContact sales