High-performance web server, reverse proxy and load balancer engineered by Igor Sysoev around an event-driven architecture that solved the C10K problem. It serves a large share of the busiest sites on the internet.
The Preservation Rating scores how well this entry is archived — not how good the software is. It's calculated automatically from what's already on this page: working mirrors, documentation, a reproducible build, a clearly identified license, and complete metadata. Nothing here is entered by hand; it updates itself whenever the entry changes.
