HAProxy
The reliable open source load balancer
3.6(327 reviews)free
free tieropen sourceself hostable
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.
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
Best For
High-traffic applications needing the most reliable open source load balancer for TCP/HTTP traffic
Pricing
Free Forever
Free
- Core features included
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