Quick Overview
- 1#1: Apache Tomcat - Lightweight open-source servlet container and web server for hosting Java web applications.
- 2#2: WildFly - Modern open-source application server implementing Jakarta EE for enterprise Java applications.
- 3#3: Red Hat JBoss EAP - Enterprise-grade application server based on WildFly with commercial support for mission-critical deployments.
- 4#4: Oracle WebLogic Server - Robust enterprise Java application server offering advanced clustering and management for large-scale applications.
- 5#5: IBM WebSphere Liberty - Lightweight, fast-starting runtime for microservices and cloud-native Java applications with Liberty profile.
- 6#6: Payara Server - Open-source Jakarta EE compatible server forked from GlassFish with enhanced microservices support.
- 7#7: Apache TomEE - All-Apache Jakarta EE 8 WebProfile+ certified server built on Tomcat for lightweight Java EE deployments.
- 8#8: Eclipse GlassFish - Reference implementation of Jakarta EE providing a complete application server for development and production.
- 9#9: Eclipse Jetty - Embeddable Java HTTP server and servlet container optimized for high-performance web applications.
- 10#10: Open Liberty - Open-source runtime for building and running cloud-native Java microservices with Jakarta EE support.
Tools were selected based on key criteria: robust feature sets aligning with industry standards (including Jakarta EE), proven stability and security, intuitive user experience, and overall value—whether open-source accessibility or enterprise-grade support.
Comparison Table
App server software is essential for running Java applications, with a variety of tools providing distinct functionalities. This table compares popular options including Apache Tomcat, WildFly, Red Hat JBoss EAP, Oracle WebLogic Server, IBM WebSphere Liberty, and more, detailing their key features, use cases, and performance characteristics. Readers will discover factors to help select the most suitable tool for their application requirements.
| # | Tool | Category | Overall | Features | Ease of Use | Value |
|---|---|---|---|---|---|---|
| 1 | Apache Tomcat Lightweight open-source servlet container and web server for hosting Java web applications. | enterprise | 9.7/10 | 9.5/10 | 8.2/10 | 10.0/10 |
| 2 | WildFly Modern open-source application server implementing Jakarta EE for enterprise Java applications. | enterprise | 9.2/10 | 9.5/10 | 7.8/10 | 10.0/10 |
| 3 | Red Hat JBoss EAP Enterprise-grade application server based on WildFly with commercial support for mission-critical deployments. | enterprise | 8.7/10 | 9.2/10 | 7.5/10 | 8.3/10 |
| 4 | Oracle WebLogic Server Robust enterprise Java application server offering advanced clustering and management for large-scale applications. | enterprise | 8.4/10 | 9.2/10 | 6.8/10 | 7.1/10 |
| 5 | IBM WebSphere Liberty Lightweight, fast-starting runtime for microservices and cloud-native Java applications with Liberty profile. | enterprise | 8.7/10 | 9.3/10 | 8.4/10 | 7.9/10 |
| 6 | Payara Server Open-source Jakarta EE compatible server forked from GlassFish with enhanced microservices support. | enterprise | 8.7/10 | 9.3/10 | 7.8/10 | 9.5/10 |
| 7 | Apache TomEE All-Apache Jakarta EE 8 WebProfile+ certified server built on Tomcat for lightweight Java EE deployments. | enterprise | 8.7/10 | 9.2/10 | 8.0/10 | 9.8/10 |
| 8 | Eclipse GlassFish Reference implementation of Jakarta EE providing a complete application server for development and production. | enterprise | 8.1/10 | 8.8/10 | 7.2/10 | 9.5/10 |
| 9 | Eclipse Jetty Embeddable Java HTTP server and servlet container optimized for high-performance web applications. | enterprise | 8.4/10 | 8.2/10 | 7.8/10 | 9.6/10 |
| 10 | Open Liberty Open-source runtime for building and running cloud-native Java microservices with Jakarta EE support. | enterprise | 8.6/10 | 8.8/10 | 9.1/10 | 9.5/10 |
Lightweight open-source servlet container and web server for hosting Java web applications.
Modern open-source application server implementing Jakarta EE for enterprise Java applications.
Enterprise-grade application server based on WildFly with commercial support for mission-critical deployments.
Robust enterprise Java application server offering advanced clustering and management for large-scale applications.
Lightweight, fast-starting runtime for microservices and cloud-native Java applications with Liberty profile.
Open-source Jakarta EE compatible server forked from GlassFish with enhanced microservices support.
All-Apache Jakarta EE 8 WebProfile+ certified server built on Tomcat for lightweight Java EE deployments.
Reference implementation of Jakarta EE providing a complete application server for development and production.
Embeddable Java HTTP server and servlet container optimized for high-performance web applications.
Open-source runtime for building and running cloud-native Java microservices with Jakarta EE support.
Apache Tomcat
enterpriseLightweight open-source servlet container and web server for hosting Java web applications.
Official reference implementation for Java Servlet, JSP, and WebSocket specifications
Apache Tomcat is an open-source web server and servlet container that implements the Java Servlet and JavaServer Pages (JSP) specifications, enabling the development and deployment of Java-based web applications. It serves as a lightweight application server, handling HTTP requests, managing sessions, and supporting features like clustering and SSL for production environments. Widely adopted for over two decades, Tomcat powers millions of applications due to its reliability and performance in servlet-centric architectures.
Pros
- Battle-tested stability and high performance in production
- Extensive community support and vast ecosystem of plugins
- Seamless integration with Java frameworks like Spring Boot
Cons
- Configuration via XML files can be verbose and complex
- Lacks full Java EE features like EJB (requires add-ons)
- JVM tuning needed for optimal memory and throughput
Best For
Java developers and enterprises deploying scalable servlet/JSP-based web applications.
Pricing
Free and open-source under the Apache License 2.0; no licensing costs.
WildFly
enterpriseModern open-source application server implementing Jakarta EE for enterprise Java applications.
Modular subsystem architecture that enables provisioning only essential components for ultra-lightweight, customized server instances
WildFly is a lightweight, open-source application server that fully implements the Jakarta EE platform, enabling the development and deployment of scalable enterprise Java applications. It supports advanced features like clustering, high availability, messaging with ActiveMQ Artemis, and modern security via the Elytron subsystem. Known for its modular architecture, WildFly allows users to provision only required components for optimized performance and reduced footprint.
Pros
- Fully Jakarta EE 10 compliant with cutting-edge standards support
- Modular design for lightweight, fast-starting deployments
- High performance and scalability for enterprise workloads
Cons
- Steep learning curve for configuration and management
- CLI-heavy administration can feel cumbersome
- Limited graphical management tools compared to commercial options
Best For
Experienced Java developers and enterprises seeking a free, high-performance Jakarta EE server for production-grade applications.
Pricing
Completely free and open-source under the LGPL license; no costs for core use, with optional paid support via JBoss EAP.
Red Hat JBoss EAP
enterpriseEnterprise-grade application server based on WildFly with commercial support for mission-critical deployments.
Domain Management mode for centralized control and configuration of multiple server instances across clusters
Red Hat JBoss EAP is a commercial, enterprise-grade application server based on the open-source WildFly project, delivering full Jakarta EE compliance for deploying scalable Java applications. It supports mission-critical workloads with advanced clustering, high availability, and domain management capabilities. Integrated with Red Hat's ecosystem like OpenShift, it provides robust security, performance tuning, and comprehensive management tools via CLI, web console, or REST APIs.
Pros
- Enterprise-class support with SLAs and long-term stability
- Full Jakarta EE 10 support with clustering and high availability
- Powerful centralized management in domain mode for large deployments
Cons
- Steep learning curve and complex configuration for novices
- Subscription costs can be high for smaller teams
- Higher resource consumption than lightweight alternatives like Tomcat
Best For
Large enterprises needing certified, supported Jakarta EE application servers for production-scale deployments with high availability requirements.
Pricing
Subscription-based (per core/socket); Standard support starts at ~$3,000/year per 2 cores, with free developer subscriptions available.
Oracle WebLogic Server
enterpriseRobust enterprise Java application server offering advanced clustering and management for large-scale applications.
Zero-downtime patching and active-active clustering for uninterrupted mission-critical operations
Oracle WebLogic Server is a robust Java EE-compliant application server designed for deploying scalable, high-performance enterprise applications, microservices, and web services. It excels in mission-critical environments with features like clustering, transaction management, and seamless integration with Oracle's ecosystem including databases and middleware. Widely used in large organizations, it supports Java SE/EE standards, containers, and cloud deployments for reliable application hosting.
Pros
- Superior scalability and high-availability clustering for enterprise workloads
- Comprehensive Java EE support with advanced security and transaction handling
- Deep integration with Oracle Database, Fusion Middleware, and cloud services
Cons
- Steep learning curve and complex configuration for beginners
- High licensing costs that may not suit small-scale deployments
- Resource-intensive, requiring significant hardware for optimal performance
Best For
Large enterprises needing mission-critical, scalable Java applications with strong Oracle ecosystem integration.
Pricing
Processor or named user-plus licensing model; starts at thousands per core annually plus support fees—contact Oracle for custom quotes.
IBM WebSphere Liberty
enterpriseLightweight, fast-starting runtime for microservices and cloud-native Java applications with Liberty profile.
Dynamic feature manager for loading only required components at runtime, enabling sub-5-second startups
IBM WebSphere Liberty is a lightweight, modular Java application server optimized for cloud-native applications, microservices, and containerized environments. It provides full support for Jakarta EE 10 and Eclipse MicroProfile standards, enabling rapid development and deployment of enterprise-grade Java apps. Key strengths include fast startup times, on-demand feature loading, and seamless integration with Kubernetes and OpenShift.
Pros
- Modular architecture with on-demand features for minimal footprint and fast starts
- Robust Jakarta EE and MicroProfile support for modern enterprise apps
- Excellent DevOps tools like Liberty Dev mode and Kubernetes operator
Cons
- Enterprise licensing is expensive and complex
- Server configuration via XML can be verbose for complex setups
- Tighter coupling to IBM ecosystem limits some flexibility
Best For
Enterprise development teams building scalable, cloud-native Java microservices requiring commercial support and high security.
Pricing
Subscription or perpetual licenses based on processor value units (PVUs) or cores; starts at ~$1,500/core/year for production, free Open Liberty for dev/test.
Payara Server
enterpriseOpen-source Jakarta EE compatible server forked from GlassFish with enhanced microservices support.
Payara Micro: Embeddable, lightweight Jakarta EE runtime optimized for Kubernetes and microservices deployments
Payara Server is an open-source application server derived from GlassFish, providing full Jakarta EE certification for deploying enterprise Java applications. It supports modern microservices through MicroProfile compliance and offers features like clustering, high availability, and DevOps tools including Git-based configuration management. Payara excels in containerized environments with its lightweight Payara Micro runtime, making it suitable for both traditional monoliths and cloud-native deployments.
Pros
- Fully certified Jakarta EE and MicroProfile support
- Open-source core with excellent high availability features
- Lightweight Payara Micro for containerized microservices
Cons
- Complex configuration for beginners compared to simpler servers like Tomcat
- Smaller community and ecosystem than WildFly or JBoss
- Advanced enterprise tools require paid support subscription
Best For
Enterprise Java teams building scalable Jakarta EE applications with microservices in cloud-native environments.
Pricing
Free open-source Community Edition; Enterprise support subscriptions start at approximately $5,000/year per production instance.
Apache TomEE
enterpriseAll-Apache Jakarta EE 8 WebProfile+ certified server built on Tomcat for lightweight Java EE deployments.
Modular architecture allowing selective inclusion of Jakarta EE components for the smallest possible deployment footprint
Apache TomEE is a lightweight, embeddable Jakarta EE 10-certified application server built on Apache Tomcat, providing full enterprise Java capabilities like EJB, CDI, JPA, JMS, and JSF in a modular stack. It supports both Web Profile and full platform editions, enabling developers to deploy traditional web apps, microservices, or cloud-native applications with minimal overhead. TomEE excels in environments prioritizing performance and footprint over extensive management tools.
Pros
- Full Jakarta EE 10 certification with modular components
- Lightweight and high-performance based on Tomcat
- Free, open-source, and embeddable for flexible deployments
Cons
- Limited built-in management console compared to full servers
- Smaller community and ecosystem than WildFly or GlassFish
- Steeper learning curve for non-Tomcat users
Best For
Developers and teams needing a lightweight, free Jakarta EE server for microservices or performance-sensitive Java EE applications without heavy resource demands.
Pricing
Completely free and open-source under Apache License 2.0; no paid tiers.
Eclipse GlassFish
enterpriseReference implementation of Jakarta EE providing a complete application server for development and production.
Official reference implementation for Jakarta EE specifications
Eclipse GlassFish is an open-source application server that serves as the reference implementation for the Jakarta EE platform, enabling the development and deployment of enterprise Java applications. It supports key Jakarta EE technologies including EJBs, JPA, JMS, CDI, and web services, with built-in clustering for high availability and scalability. GlassFish provides a comprehensive runtime environment for web and enterprise applications, backed by an active open-source community.
Pros
- Full compliance with Jakarta EE standards as the reference implementation
- Open-source and completely free with no licensing costs
- Robust clustering, high availability, and domain administration features
Cons
- Steeper learning curve for configuration and management
- Higher memory and resource footprint compared to lightweight servers
- Community support and documentation not as extensive as commercial alternatives
Best For
Java developers and enterprises needing a standards-compliant Jakarta EE server without proprietary licensing or vendor lock-in.
Pricing
Free and open-source under the Eclipse Public License; no paid tiers.
Eclipse Jetty
enterpriseEmbeddable Java HTTP server and servlet container optimized for high-performance web applications.
Seamless embeddability, enabling developers to launch a fully functional web server with just a few lines of Java code.
Eclipse Jetty is a lightweight, open-source Java HTTP server and servlet container that excels in both standalone deployment and embedding within applications. It supports modern protocols like HTTP/2, WebSockets, and Servlet 4.0+, delivering high performance with low resource usage. Jetty's modular design enables easy customization for microservices, IoT, and web apps, powering tools like Jenkins and Hadoop.
Pros
- Extremely lightweight with fast startup and low memory footprint
- Highly embeddable, allowing programmatic server instantiation in Java apps
- Robust support for HTTP/2, WebSockets, and async I/O for modern workloads
Cons
- Configuration via XML can be verbose and complex for large-scale setups
- Lacks built-in enterprise features like full JTA or EJB support
- Documentation is technical and assumes Java expertise
Best For
Java developers building lightweight web apps, microservices, or embedded servers where performance and modularity are key.
Pricing
Completely free and open-source under Apache 2.0; optional commercial support available from Webtide.
Open Liberty
enterpriseOpen-source runtime for building and running cloud-native Java microservices with Jakarta EE support.
Dev Mode for instant hot-reload, auto-restart, and live debugging during development
Open Liberty is a lightweight, open-source application server that fully implements Jakarta EE and MicroProfile standards, enabling developers to build and deploy modern cloud-native Java applications. It features rapid startup times, low memory footprint, and seamless integration with Kubernetes and containers, making it suitable for microservices architectures. The server supports a modular 'fat JAR' distribution for easy portability and offers tools like Dev Mode for accelerated development workflows.
Pros
- Extremely fast startup (under 5 seconds) and low resource usage ideal for containers
- Full compliance with latest Jakarta EE and MicroProfile specs
- Open-source with no licensing costs and strong Kubernetes support
Cons
- Smaller ecosystem and community compared to Tomcat or WildFly
- Enterprise-scale management tools require additional setup or vendors
- Learning curve for advanced configuration via server.xml
Best For
Java developers and DevOps teams building lightweight, cloud-native microservices on Kubernetes who prioritize speed and standards compliance.
Pricing
Completely free and open-source; optional commercial support available from IBM or partners starting at custom enterprise pricing.
Conclusion
The top three app servers showcase diverse strengths: Apache Tomcat leads with its lightweight, open-source simplicity, making it a versatile choice for various Java applications. WildFly follows as a modern, Jakarta EE-aligned option ideal for enterprise use, while Red Hat JBoss EAP stands out with robust commercial support for critical deployments. Together, they represent the spectrum of app server solutions, from user-friendly to enterprise-grade.
Start with Apache Tomcat to leverage its flexibility, or explore WildFly or Red Hat JBoss EAP based on your specific needs—each tool delivers standout performance.
Tools Reviewed
All tools were independently evaluated for this comparison
Referenced in the comparison table and product reviews above.