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Top 12 Open-Source Alternatives to IBM Connections

Apache Tomcat Apache HTTP Server Phusion Passenger Wildfly Gunicorn Apache ZooKeeper web2py nginx Undertow Cowboy

Product categories

Application Server Chat Communication Development Tools Group Chat & Notifications HTTP HTTP/2 Web Server Internet Of Things Java Load Balancer / Reverse Proxy Web And Application Servers Web Servers

Summary

The top open-source alternatives to IBM Connections are Apache Tomcat, Apache HTTP Server, and Phusion Passenger. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.
  1. Apache Tomcat Landing Page
    Apache Tomcat Landing Page
    1

    Apache Tomcat

    An open source software implementation of the Java Servlet and JavaServer Pages technologies
    Pricing:
    • Open Source

    #Web And Application Servers #Application Server #Java 14 social mentions

  2. Apache HTTP Server Landing Page
    Apache HTTP Server Landing Page
    2

    Apache HTTP Server

    Apache httpd has been the most popular web server on the Internet since April 1996
    Pricing:
    • Open Source

    #Web And Application Servers #Web Servers #Application Server 50 social mentions

  3. Phusion Passenger Landing Page
    Phusion Passenger Landing Page
    3

    Phusion Passenger

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

    #Web Servers #HTTP/2 Web Server #Web And Application Servers 1 social mentions

  4. Wildfly Landing Page
    Wildfly Landing Page
    4

    Wildfly

    WildFly is a flexible, lightweight application server.
    Pricing:
    • Open Source

    #Web And Application Servers #Web Servers #Application Server 1 social mentions

  5. Gunicorn Landing Page
    Gunicorn Landing Page
    5

    Gunicorn

    Gunicorn is a Python WSGI HTTP Server for UNIX.
    Pricing:
    • Open Source

    #Web And Application Servers #Web Servers #Application Server 31 social mentions

  6. Apache ZooKeeper Landing Page
    Apache ZooKeeper Landing Page
    6

    Apache ZooKeeper

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

    #Web And Application Servers #Web Servers #Application Server 29 social mentions

  7. web2py Landing Page
    web2py Landing Page
    7

    web2py

    Web2py is an open source web application framework.
    Pricing:
    • Open Source

    #Web And Application Servers #Web Servers #Application Server 1 social mentions

  8. nginx Landing Page
    nginx Landing Page
    8

    nginx

    A high performance free open source web server powering busiest sites on the Internet.
    Pricing:
    • Open Source

    #Web And Application Servers #Web Servers #Application Server 46 social mentions

  9. Undertow Landing Page
    Undertow Landing Page
    9

    Undertow

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

    #Web And Application Servers #Web Servers #Application Server

  10. Cowboy Landing Page
    Cowboy Landing Page
    10

    Cowboy

    Small, fast, modular HTTP server written in Erlang.
    Pricing:
    • Open Source

    #Web And Application Servers #HTTP #HTTP/2 Web Server 5 social mentions

  11. ejabberd Landing Page
    ejabberd Landing Page
    11

    ejabberd

    ejabberd is a robust, massively scalable and extensible XMPP server.
    Pricing:
    • Open Source

    #Group Chat & Notifications #Web And Application Servers #Communication 2 social mentions

  12. Apache James Landing Page
    Apache James Landing Page
    12

    Apache James

    Apache James is a pure Java SMTP, POP3 enterprise mail server.
    Pricing:
    • Open Source

    #Web And Application Servers #Application Server #Java 4 social mentions

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