Tengine is a web server originated by Taobao, the largest e-commerce website in Asia. It is based on the Nginx HTTP server and has many advanced features. Tengine has proven to be very stable and efficient on some of the top 100 websites in the world, including taobao.com and tmall.com.
 
It includes all features of nginx-1.8.1 and it is 100% compatible with nginx, Dynamic module loading support. You don't need to recompile Tengine when adding new modules to it, HTTP/2 support, Sends unbuffered upload directly to HTTP and FastCGI backend servers, which saves disk I/Os, More load balancing methods and lot more.

Tengine is a web server originated by Taobao, the largest e-commerce website in Asia. It is based on the Nginx HTTP server and has many advanced features. Tengine has proven to be very stable and efficient on some of the top 100 websites in the world, including taobao.com and tmall.com.

tengine - A distribution of Nginx with some advanced features

As on the ground microservice practitioners quickly realize, the majority of operational problems that arise when moving to a distributed architecture are ultimately grounded in two areas: networking and observability. It is simply an orders of magnitude larger problem to network and debug a set of intertwined distributed services versus a single monolithic application.
 
Originally built at Lyft, Envoy is a high performance C++ distributed proxy designed for single services and applications, as well as a communication bus and “universal data plane” designed for large microservice “service mesh” architectures. Built on the learnings of solutions such as NGINX, HAProxy, hardware load balancers, and cloud load balancers, Envoy runs alongside every application and abstracts the network by providing common features in a platform-agnostic manner. When all service traffic in an infrastructure flows via an Envoy mesh, it becomes easy to visualize problem areas via consistent observability, tune overall performance, and add substrate features in a single place.
 
Envoy is hosted by the Cloud Native Computing Foundation (CNCF). If you are a company that wants to help shape the evolution of technologies that are container-packaged, dynamically-scheduled and microservices-oriented, consider joining the CNCF.

As on the ground microservice practitioners quickly realize, the majority of operational problems that arise when moving to a distributed architecture are ultimately grounded in two areas: networking and observability. It is simply an orders of magnitude larger problem to network and debug a set of intertwined distributed services versus a single monolithic application.

Envoy - C++ front/service proxy

Nginx [engine x] is an HTTP and reverse proxy server, as well as a mail proxy server, written by Igor Sysoev. It supports accelerated reverse proxying with caching, simple load balancing and fault tolerance, SSL and TLS SNI support, Name-based and IP-based virtual servers and lot more.

Nginx - HTTP and reverse proxy server

Cilium is open source software for providing and transparently securing network connectivity and loadbalancing between application workloads such as application containers or processes. Cilium operates at Layer 3/4 to provide traditional networking and security services as well as Layer 7 to protect and secure use of modern application protocols such as HTTP, gRPC and Kafka. Cilium is integrated into common orchestration frameworks such as Kubernetes.
 
A new Linux kernel technology called eBPF is at the foundation of Cilium. It supports dynamic insertion of eBPF bytecode into the Linux kernel at various integration points such as: network IO, application sockets, and tracepoints to implement security, networking and visibility logic. eBPF is highly efficient and flexible.

Cilium is open source software for providing and transparently securing network connectivity and loadbalancing between application workloads such as application containers or processes. Cilium operates at Layer 3/4 to provide traditional networking and security services as well as Layer 7 to protect and secure use of modern application protocols such as HTTP, gRPC and Kafka. Cilium is integrated into common orchestration frameworks such as Kubernetes.

Cilium -  eBPF-based Networking, Security, and Observability

Ribbon is a client side IPC library that is battle-tested in cloud. It provides Load balancing, Fault tolerance, Multiple protocol (HTTP, TCP, UDP),  support in an asynchronous and reactive model Caching and batching.


Ribbon - IPC library with built in software load balancers

HAProxy is a fast and reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications. It is particularly suited for web sites crawling under very high loads while needing persistence or Layer7 processing. Supporting tens of thousands of connections is clearly realistic with todays hardware. 

HAProxy - The Reliable, High Performance TCP/HTTP Load Balancer

This project comprises the core C++ HTTP abstractions used at Facebook. Internally, it is used as the basis for building many HTTP servers, proxies, and clients. This release focuses on the common HTTP abstractions and our simple HTTPServer framework. Future releases will provide simple client APIs as well. The framework supports HTTP/1.1, SPDY/3, SPDY/3.1, and HTTP/2. The goal is to provide a simple, performant, and modern C++ HTTP library.

Proxygen - Facebook's C++ HTTP framework

fabio is a fast, modern, zero-conf load balancing HTTP(S) and TCP router for deploying applications managed by consul.Register your services in consul, provide a health check and fabio will start routing traffic to them. No configuration required. Deployment, upgrading and refactoring has never been easier. It integrates with Consul, Vault, Amazon ELB, Amazon API Gateway and more.

fabio - A fast, modern, zero-conf load balancing HTTP(S) router for deploying microservices managed by consul

Træfik (pronounced like traffic) is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease. It supports several backends (Docker, Swarm mode, Kubernetes, Marathon, Consul, Etcd, Rancher, Amazon ECS, and a lot more) to manage its configuration automatically and dynamically.

Træfik (pronounced like traffic) is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease. It supports several backends (Docker, Swarm mode, Kubernetes, Marathon, Consul, Etcd, Rancher, Amazon ECS, and a lot more) to manage its configuration automatically and dynamically.

Trafik - A Modern Reverse Proxy

PM2 is a production process manager for Node.js applications with a built-in load balancer. It allows you to keep applications alive forever, to reload them without downtime and to facilitate common system admin tasks.PM2 is constantly assailed by more than 1800 tests.
<ul>
<li>Simple and efficient process management (start/stop/restart/delete/show/monit)</li>
<li>Keep your application ALWAYS ONLINE with auto restarts and init system script generation</li>
<li>Clusterize Node.js Applications without code change to increase performance and reliability</li>
<li>Hot Reload Node.js Applications without extra configuration</li>
</ul>

PM2 is a production process manager for Node.js applications with a built-in load balancer. It allows you to keep applications alive forever, to reload them without downtime and to facilitate common system admin tasks.PM2 is constantly assailed by more than 1800 tests.

pm2 - Node.js Production Process Manager with a built-in Load Balancer

Katran is a C++ library and BPF program to build high-performance layer 4 load balancing forwarding plane. Katran leverages XDP infrastructure from the kernel to provide an in-kernel facility for fast packet's processing. 

Katran - A high performance layer 4 load balancer

Zuul is an edge service that provides dynamic routing, monitoring, resiliency, security, and more. Zuul is the front door for all requests from devices and web sites to the backend of the Netflix streaming application. As an edge service application, Zuul is built to enable dynamic routing, monitoring, resiliency and security. It also has the ability to route requests to multiple Amazon Auto Scaling Groups as appropriate.

Zuul - Gateway service that provides dynamic routing, monitoring, resiliency, security, and more

node-http-proxy is an HTTP programmable proxying library that supports websockets. It is suitable for implementing components such as reverse proxies and load balancers. When a request is proxied it follows two different pipelines, The first pipeline (incoming) is responsible for the creation and manipulation of the stream that connects your client to the target. The second pipeline (outgoing) is responsible for the creation and manipulation of the stream that, from your target, returns data to the client.

node-http-proxy - A full-featured http proxy for NodeJS

Apache APISIX is a dynamic, real-time, high-performance API gateway. APISIX provides rich traffic management features such as load balancing, dynamic upstream, canary release, circuit breaking, authentication, observability, and more. You can use Apache APISIX to handle traditional north-south traffic, as well as east-west traffic between services. It can also be used as a k8s ingress controller.
 
You can use Apache APISIX as a traffic entrance to process all business data, including dynamic routing, dynamic upstream, dynamic certificates, A/B testing, canary release, blue-green deployment, limit rate, defense against malicious attacks, metrics, monitoring alarms, service observability, service governance, etc.

Apache APISIX is a dynamic, real-time, high-performance API gateway. APISIX provides rich traffic management features such as load balancing, dynamic upstream, canary release, circuit breaking, authentication, observability, and more. You can use Apache APISIX to handle traditional north-south traffic, as well as east-west traffic between services. It can also be used as a k8s ingress controller.

Apache APISIX - Dynamic, real-time, high-performance API gateway

Linkerd is a transparent service mesh, designed to make modern applications safe and sane by transparently adding service discovery, load balancing, failure handling, instrumentation, and routing to all inter-service communication.linkerd (pronouned "linker-DEE") acts as a transparent HTTP/gRPC/thrift/etc proxy, and can usually be dropped into existing applications with a minimum of configuration, regardless of what language they're written in. It works with many common protocols and service discovery backends, including scheduled environments like Mesos and Kubernetes.

linkerd - Resilient service mesh for cloud native apps

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