HAProxy vs Envoy Proxy
A detailed comparison to help you choose between HAProxy and Envoy Proxy.
Quick Verdict
3.6/5
HAProxy
327 reviews
4.0/5
Envoy Proxy
307 reviews
Envoy Proxy is rated higher (4.0 vs 3.6). HAProxy is a free, open source, high-performance TCP/HTTP load balancer. Handles 100,000+ concurrent connections. Used by Reddit, Tumblr, and AWS. Known for reliability over many years. Envoy is an open source L7 proxy and service mesh foundation. Used as the data plane in Istio, AWS App Mesh, and Consul Connect. High performance, built for microservices and Kubernetes.
HAProxy The reliable open source load balancer | Envoy Proxy Cloud-native proxy and service mesh sidecar | |
|---|---|---|
| Overview | ||
| Rating | 3.6 (327 reviews) | 4.0 (307 reviews)✓ |
| Pricing model | free | free |
| Starting price | Free | Free |
| Best for | High-traffic applications needing the most reliable open source load balancer for TCP/HTTP traffic | Platform engineering teams building service mesh infrastructure on Kubernetes using Istio or similar |
| Tags | ||
| Tags | free tieropen sourceself hostable | free tieropen source |
| Visit HAProxy → | Visit Envoy Proxy → | |
HAProxy
Pros
- + Handles 100,000+ concurrent connections
- + Very reliable — used by Reddit and AWS
- + Free and open source
Cons
- - No built-in GUI — configuration is file-based
- - Less feature-rich than enterprise solutions for advanced routing
Envoy Proxy
Pros
- + Foundation of major service meshes (Istio)
- + High performance C++ implementation
- + Built for Kubernetes microservices
Cons
- - Very complex configuration
- - Not for simple load balancing needs
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