Top 20 open-source products relevant to Application Server, Web Servers, and Web And Application Servers

A high performance free open source web server powering busiest sites on the Internet.

Open Source

Apache httpd has been the most popular web server on the Internet since April 1996.

Open Source

The HTTP/2 Web Server with Automatic HTTPS.

Open Source

Apache ZooKeeper is an effort to develop and maintain an open-source server which enables highly reliable distributed coordination.

Open Source

Web2py is an open source web application framework.

Open Source

Unicorn is an HTTP server for Rack applications designed to only serve fast clients on low-latency, high-bandwidth connections.

Open Source

WildFly is a flexible, lightweight application server.

Open Source

Gunicorn is a Python WSGI HTTP Server for UNIX.

Open Source

All in one web server.

Open Source

Phusion Passenger is a multi-language (Ruby, Python, Node) web & app server which can integrate into Apache and Nginx.

Open Source

Tengine is a web server based on Nginx HTTP server.

Open Source

Undertow is a webserver​ written in Java, providing both blocking and non-blocking API’s based on NIO.

Open Source

High-performance web server.

Open Source

Cross-platform, Docker-based alternative to XAMPP.

Open Source

Payara Server is a fully supported, developer-friendly, open source application server. Innovative, cloud-native, optimized for production deployments. Jakarta EE & MicroProfile compatible.

Open Source freemium

The liberating local development tool for all your projects.

Open Source

A local web server for developers.

Open Source

appserver.io is a multithreaded application server for php written in php.

Open Source

Apache James is a pure Java SMTP, POP3 enterprise mail server.

Open Source

Angie - drop-in replacement for Nginx.

Open Source