waitress - WSGI server

  •        3

Waitress is meant to be a production-quality pure-Python WSGI server with very acceptable performance. It has no dependencies except ones which live in the Python standard library. It runs on CPython on Unix and Windows under Python 2.7+ and Python 3.3+. It is also known to run on PyPy 1.6.0+ on UNIX. It supports HTTP/1.0 and HTTP/1.1. For more information, see the "docs" directory of the Waitress package or http://docs.pylonsproject.org/projects/waitress/en/latest/ .




Related Projects

meinheld - meinheld is a high performance asynchronous WSGI Web Server (based on picoev)

This is a high performance python wsgi web server. Thus this is yet an another asynchronous web server like gevent.

bjoern - Fast And Ultra-Lightweight HTTP/1.1 WSGI Server

A screamingly fast, ultra-lightweight WSGI server for CPython, written in C using Marc Lehmann's high performance libev event loop and Ryan Dahl's http-parser. It is single threaded and it has less memory foot print.


Gunicorn 'Green Unicorn' is a Python WSGI HTTP Server for UNIX. It's a pre-fork worker model ported from Ruby's Unicorn project. The Gunicorn server is broadly compatible with various web frameworks, simply implemented, light on server resources, and fairly speedy.

Zappa - Serverless Python Web Services

With a traditional HTTP server, the server is online 24/7, processing requests one by one as they come in. If the queue of incoming requests grows too large, some requests will time out. With Zappa, each request is given its own virtual HTTP "server" by Amazon API Gateway. AWS handles the horizontal scaling automatically, so no requests ever time out. Each request then calls your application from a memory cache in AWS Lambda and returns the response via Python's WSGI interface. After your app returns, the "server" dies.

http4s - A typeful, purely functional, streaming library for HTTP clients and servers in Scala

Http4s is a minimal, idiomatic Scala interface for HTTP services. Http4s is Scala's answer to Ruby's Rack, Python's WSGI, Haskell's WAI, and Java's Servlets.

James - Enterprise Mail Server

James (a.k.a Java Apache Mail Enterprise Server) is a 100% pure Java SMTP and POP3 Mail server, and NNTP News server designed to be a complete and portable enterprise mail/messaging engine solution based on currently available open messaging protocols.

meinheld - meinheld is a high performance asynchronous WSGI Web Server (based on picoev)

meinheld is a high performance asynchronous WSGI Web Server (based on picoev)

fapws3 - Fast Asynchronous Python Web Server (based on libev)

FAPWS (Fast Asynchronous Python Web Server) is a fully WSGI compliant web server for the Python environment with 2 main objectives: keep it small and asynchronous. That way it will not heat your HW resources and will assure to not fall into C10K troubles. It can handle as much as concurrent request as your kernel can handle, Gzip support for on the fly compression and lot more.

ring - Clojure HTTP server abstraction

Ring is a Clojure web applications library inspired by Python's WSGI and Ruby's Rack. By abstracting the details of HTTP into a simple, unified API, Ring allows web applications to be constructed of modular components that can be shared among a variety of applications, web servers, and web frameworks. The SPEC file at the root of this distribution provides a complete description of the Ring interface.


Citadel is a collaboration suite (messaging and groupware). It provides support for Email, Calendaring/Scheduling, Address books, Bulletin boards, Mailing List Server, Instant Messaging, Wiki, Multiple domain support.

Bottle - Python Web Framework

Bottle is a fast, simple and lightweight WSGI micro web-framework for Python. It is distributed as a single file module and has no dependencies other than the Python Standard Library. It supports routing requests to function-call mapping with support for clean and dynamic URLs. Built-in template engine, Convenient access to form data, file uploads, cookies, headers and other HTTP-related metadata, Built-in HTTP development server and lot more.

Devil Linux - Linux for Sys Admin

Devil-Linux is a CD-based Linux distribution for firewalls and routers. The goal of Devil-Linux is to have a small, customizable and secure Linux. It could boot from CDROM or USB flash drive. Its main purpose is to be used as server for many applications. It doesn't have any GUI or XServer related stuff. It is mainly targeted for Sys Admin.

lpmsserv - an http server based on elpmis

an http server based on elpmis script language with localization / storage <storoom> supported can setup http server without any c++ / vb.net / c# code change support save & refresh, can get response changed without even restart server

evpp - A modern C++ network library for developing high performance network services in TCP/UDP/HTTP protocols

evpp is a modern C++ network library for developing high performance network services in TCP/UDP/HTTP protocols. evpp provides a TCP Server to support multi-threaded nonblocking event-drive server and also a HTTP, UDP Server to support http and udp prococol.NOTE: master is our development branch and may not be stable at all times.

armeria - Asynchronous RPC/REST library built on top of Java 8, Netty, HTTP/2, Thrift and gRPC

Visit the official web site for more information.Armeria is an open-source asynchronous RPC/API client/server library built on top of Java 8, Netty 4.1, HTTP/2, Thrift and gRPC. Its primary goal is to help engineers build high-performance asynchronous microservices that use HTTP/2 as a session layer protocol.

nuster - A web caching proxy server based on HAProxy

Nuster is a simple yet powerful web caching proxy server based on HAProxy. It is 100% compatible with HAProxy, and takes full advantage of the ACL functionality of HAProxy to provide fine-grained caching policy based on the content of request, response or server status. Nuster is very fast, some test shows nuster is almost three times faster than nginx when both using single core, and nearly two times faster than nginx and three times faster than varnish when using all cores.

Caddy - Fast, cross-platform HTTP/2 web server with automatic HTTPS

Caddy is a general-purpose HTTP/2 web server that serves HTTPS by default. Caddy is fast, easy to use, and makes you more productive.

http-server - a simple zero-configuration command-line http server

http-server is a simple, zero-configuration command-line http server. It is powerful enough for production usage, but it's simple and hackable enough to be used for testing, local development, and learning.This will install http-server globally so that it may be run from the command line.