Nginx or NGINX is a high-performance, open-source web server that also functions as a reverse proxy, load balancer, HTTP cache, TCP/UDP proxy, and mail proxy server. It was designed to efficiently handle large volumes of web traffic while using minimal system resources, making it particularly well suited for high-concurrency environments.
The software was created by Igor Vladimirovich Sysoev (Russian: ะะณะพัั ะะปะฐะดะธะผะธัะพะฒะธั ะกััะพฬะตะฒ), a Russian software engineer and system administrator, who began developing Nginx in 2002. His primary motivation was to solve the C10k problem, which refers to the difficulty traditional web servers faced when handling more than 10,000 simultaneous client connections. At that time, widely used servers relied on process- or thread-based models that scaled poorly under heavy load. Sysoev addressed this limitation by designing Nginx around an asynchronous, event-driven, non-blocking I/O architecture, allowing a small number of processes to manage many concurrent connections efficiently. The first public release of Nginx occurred in October 2004, distributed under the BSD-2-Clause license, which encouraged broad adoption, modification, and redistribution.
From its early versions, Nginx distinguished itself through low memory consumption, predictable performance under load, and built-in support for reverse proxying, load balancing, caching, and mail proxying. Its modular architecture allowed functionality to be extended through both official and third-party modules. Adoption grew steadily through word of mouth among system administrators and developers, particularly those managing high-traffic websites, and it gradually spread from early regional use to global popularity.
In 2011, the project entered a more formal commercial phase with the creation of Nginx, Inc., founded by Igor Sysoev and Maxim Konovalov. The company was established to provide professional support, consulting, and enterprise-grade products built on top of the open-source core. One of the key commercial offerings was NGINX Plus, which added advanced features and official support while keeping the core web server open source. The company attracted venture capital investment and expanded its role in the broader application delivery and infrastructure market.
In March 2019, Nginx, Inc. was acquired by F5, Inc. for approximately 670 million US dollars. Following the acquisition, Nginx became a central component of F5โs application delivery and security portfolio. Despite the change in ownership, the open-source version of Nginx continued to be freely available and actively maintained, with development carried out by a mix of corporate engineers and community contributors.
On 12 December 2019, it was reported that the Moscow offices of Nginx Inc. had been raided by police, and that Sysoev and Konovalov had been detained. The raid was conducted under a search warrant connected to a copyright claim over Nginx by Ramblerโwhich asserts that it owns all rights to the code because it was written while Sysoev was an employee of Rambler in the 2000s when he wrote the early versions of Nginx.
On 16 December 2019, Russian state lender Sberbank, which owns 46.5 percent of Rambler, called an extraordinary meeting of Rambler’s board of directors asking Rambler’s management team to request Russian law enforcement agencies cease pursuit of the criminal case, and begin talks with Nginx and its owner F5.
Over time, Nginx evolved to support modern web standards and use cases. Major enhancements included support for newer protocols such as HTTP/2 and HTTP/3, improved performance and stability, and the introduction of additional tooling such as njs, a JavaScript-based scripting extension for request handling and logic. The role of Nginx also expanded beyond traditional web serving to include API gateways, edge proxies, and core data-plane components in cloud-native and Kubernetes-based environments.
On 18 January 2022, it was announced that Igor Sysoev was leaving Nginx and F5.
In 2024, the open-source codebase moved to GitHub, enabling a more transparent contribution model through pull requests and public issue tracking.
Nginx achieved widespread dissemination and adoption and consistently ranks among the most widely used web servers on the internet. It is deployed by organizations of all sizes, from small websites to large global platforms, and is valued for its performance, reliability, and flexibility. Its architecture has also inspired related projects and distributions, such as OpenResty, which integrates Nginx with LuaJIT for advanced server-side scripting. In parallel, Nginx is commonly embedded in Kubernetes ingress controllers and service meshes, extending its influence into modern containerized infrastructure.
As the project matured under corporate stewardship, some community tensions emerged regarding governance and development direction. This led to the creation of forks such as Angie, in 2022 and freenginx in 2024 by former contributors, reflecting broader debates within open-source ecosystems about control, transparency, and contributor influence.
In 2025, Nginx remained a foundational technology in modern web infrastructure, receiving ongoing updates, security fixes, and protocol enhancements. Its core design principles โ efficiency, scalability, and event-driven concurrency โ have had a lasting impact on the design of web servers, proxies, and application delivery systems across the industry.
See more details on: