Top 10 Best Server Application Software of 2026

GlassFish provides an application server runtime with web and REST support, so Java-based services can be deployed as packaged artifacts and managed through its admin interfaces. The platform includes support for persistence integration via JDBC connection strings and resource definitions, which reduces custom bootstrap code in many deployments. It also supports cluster-style deployment and replication concepts, which can be used to keep sessions available across multiple runtime instances.

A key tradeoff is that many production operators choose alternative application servers when they need deeper enterprise governance features or newer platform alignment through add-on ecosystems. GlassFish fits best for teams building Java web applications that require fast iteration and clear deployment controls in a fixed runtime environment.

WildFly provides a standard Java EE and Jakarta EE servlet container runtime with deployment packaging, lifecycle management, and service-oriented startup. Administration uses a command and API surface that supports scripting deployments, inspecting subsystem states, and applying configuration changes across managed servers. Clustering features let applications coordinate session replication and failover across nodes for higher availability setups.

A key tradeoff is that WildFly requires more operational attention than lighter servlet containers because tuning, module selection, and clustering configuration are part of the day-to-day work. WildFly works well for teams running long-lived application deployments who need repeatable server configuration and controlled runtime changes during rolling deployments.

Jetty focuses on predictable request handling for HTTP workloads, including tuning of thread behavior and connection handling for different traffic patterns. The configuration approach supports repeatable setups with environment-specific overrides, which helps when multiple services share the same server baseline. Jetty also exposes a modular HTTP stack, so teams can add features like request customization and streaming behavior without rewriting the entire runtime.

A tradeoff appears in operational depth for clustering and enterprise session replication, which typically requires additional components rather than built-in clustering orchestration. Jetty fits teams that need a servlet container for internal REST APIs, or teams embedding the server into a custom Java process for tighter control of startup, lifecycle, and footprint.

Red Hat JBoss Enterprise Application Platform is a Java application server that combines a managed runtime with enterprise operational controls for clustered deployments. It supports servlet-based web workloads and backend services with configurable clustering, session management, and integration-ready connectivity. The product also layers management features for provisioning, deployment lifecycle control, and security integration across environments.

IBM WebSphere Application Server hosts Java enterprise applications with a full application-server runtime and servlet container support. It provides clustering, session failover options, and configuration for high availability across runtime processes.

Admin control is centered on policy-driven security and operational tooling for deploying, monitoring, and auditing server changes. It also supports enterprise integration patterns through Java EE features and extensible runtime components for messaging and REST exposure.

Apache Tomcat is a Java servlet container focused on running web applications that use the Servlet and JavaServer Pages APIs. It ships with a mature HTTP connector, configurable worker threads, and pluggable SSL support for TLS termination patterns behind reverse proxies.

Core capabilities include deployment via WAR files, session handling options such as replication through clustering add-ons, and extensive configuration through server.xml and context descriptors. Administrators can extend behavior with standard Tomcat valves and integrate authentication through common security components built around servlet filters and connectors.

Apache HTTP Server delivers a long-running daemon with a module-driven request pipeline that many alternative app servers handle via frameworks instead. Core capabilities include virtual hosts, TLS support, reverse proxy features, and flexible URL-to-handler mapping through loadable modules.

Administration is done through text configuration files that can be validated and reloaded for controlled operational changes. Extensibility comes from third-party and bundled modules that add authentication, caching, and protocol handling without changing the base runtime process.

Apache TomEE runs as an application server built around the Java servlet container and Jakarta EE stack, with tight coupling between the web runtime and enterprise components. It brings CDI, JAX-RS, and JPA into the same deployment unit, so REST endpoints, entity persistence, and injection wiring share one configuration model.

TomEE also supports EJB semantics like transaction management, plus pluggable connection pools for JDBC-backed workloads. For teams standardizing on Java EE annotations, TomEE offers a predictable runtime baseline that reduces glue code between servlet handling, dependency injection, and persistence.

Caddy runs as an application server reverse proxy that serves HTTP and HTTPS with a single binary and a declarative configuration format.

Automatic TLS certificate provisioning and per-site routing rules cover the common edge patterns of HTTPS termination and upstream forwarding without external certificate automation.

Transport behavior includes standard HTTP/2 handling and WebSocket upgrade support, which helps for apps that mix browser traffic and long-lived connections.

Extensibility comes from handler modules and plugins that add routing logic and custom proxy behaviors without changing the core server.

LiteSpeed Web Server is a drop-in web server often used as an application front end for servlet container stacks. It focuses on high-performance handling with LiteSpeed-specific HTTP processing, including a mature reverse proxy and caching subsystem.

The product supports TLS termination, HTTP/2, and HTTP/3, and it can integrate with upstream application servers for dynamic content delivery. Administration centers on configuration files and a management interface that controls listeners, virtual hosts, and request handling policies.