Compare the Top Application Server Software for Linux as of July 2025

What is Application Server Software for Linux?

Application server software provides a platform for deploying, managing, and running applications, typically for web or enterprise environments. These servers handle the backend logic of applications, facilitating the connection between client devices and databases or other services. Application servers often provide middleware services such as security, transaction management, and messaging, enabling the smooth execution of applications. They are designed to support multiple users simultaneously and ensure high availability, scalability, and performance of applications. This software is commonly used in environments where complex, data-intensive applications are developed, such as in e-commerce platforms, enterprise resource planning (ERP), and customer relationship management (CRM) systems. Compare and read user reviews of the best Application Server software for Linux currently available using the table below. This list is updated regularly.

  • 1
    RasPiEsi
    RasPiEsi is The World's Smallest Open Source ERP Application Server powered by Epesi and running on Raspberry Pi Zero with 1 core and 512MB RAM only. Part of Epesi ENS - the first FOSS Enterprise Nervous System. Epesi BIM on LLMP stack: - Linux - Lighttpd - MariaDB - tuned - PHP 7.4 FPM + memcached and ZRAM neofetch, mc, ncdu added and updated 77 packages on November 4, 2023 for version 1.1 ("Józiu") RasPiEsi is the smallest possible Epesi Node I was able to build with the smallest RAM usage of only 133MB! Thanks to the excellent DietPi distro this tiny server runs Epesi surprisingly well especially on a fast SD card. It should run unmodified on any Raspberry Pi - from the lowest end $5 RPi Zero with no WiFi and 1 CPU and 512 MB of RAM (used to create this disk image), to the high end RPi 4. Tested fine on RPi 3 - unmodified, just swapped between units! MIT License • Copyright (c) 2024 by Janusz Tylek and Karina Tylek
    Starting Price: $0
  • 2
    NGINX Unit
    An universal web app server that combines several layers of the typical application stack into a single component. NGINX Unit simplifies the application stack for web apps and APIs by combining several layers of the typical stack into a single component. NGINX Unit is a universal web app server, intended as a building block for any web architecture regardless of its complexity, from enterprise-scale deployments to your pet's home page. It is equally suited to simplifying modern microservices environments as it is to modernizing legacy and monolithic applications. NGINX Unit was created by the original NGINX team on an all-new, open-source codebase. The architecture incorporates insights from over a decade of running the world’s most popular web server. Unlike the NGINX web server, NGINX Unit uses a multi-process, multi-threaded architecture. The NGINX web server is often deployed as a reverse proxy in front of web applications. NGINX Unit can run the application code natively.
  • 3
    TidalScale

    TidalScale

    TidalScale

    TidalScale software-defined servers represent a breakthrough in computing. TidalScale’s software solution “glues” your commodity servers together so that they function as a single system. The software accomplishes this by aggregating and virtualizing the CPU cores, memory, and I/O of multiple physical servers, and then presenting them as a single “software-defined server” to the operating system. Now with TidalGuard™ technology, individual servers can be hot-swapped allowing them to be upgraded or repaired all while the mission-critical workload continues to run. And all of this requires no changes to either the application or the operating system! With built-in patented TidalGuard™ technology, software-defined servers help detect and avoid over 90% of hardware failures via hot-swapping of a failing server with a spare. In the rare case that a server does fail, a software-defined server can immediately restart using the spare in a matter of minutes.
  • 4
    LiteSpeed Web Server

    LiteSpeed Web Server

    LiteSpeed Technologies

    Our lightweight Apache alternative conserves resources without sacrificing performance, security, compatibility, or convenience. Double the maximum capacity of your current Apache servers with LiteSpeed Web Server's streamlined event-driven architecture, capable of handling thousands of concurrent clients with minimal memory consumption and CPU usage. Protect your servers with already familiar ModSecurity rules while also taking advantage of a host of built-in anti-DDoS features, such as bandwidth and connection throttling. Conserve capital by reducing the number of servers needed to support your growing hosting business or online application. Reduce complexity by eliminating the need for an HTTPS reverse proxy or additional 3rd party caching layers. LiteSpeed Web Server is compatible with all popular Apache features including its Rewrite Engine and ModSecurity, and can load Apache configuration files directly.
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