GlassFish is an open-source application server project and a product of Oracle Corporation. It allows the deployment of Java EE applications.
Best Open Liberty Alternatives ranked by AI · updated Aug 2026
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Open Liberty is a lightweight, open-source runtime for Jakarta EE and MicroProfile applications. It targets cloud-native and enterprise Java services with fast startup, modular feature selection, transactions, messaging, and container support.
Top 6 Open Liberty alternatives
WildFly is an open-source Jakarta EE application server for deploying enterprise Java applications and services. It provides transactions, messaging, security, clustering, and...
Pros
- Strong free and open-source alternative for Java-based transactional services
- Supports Jakarta EE, JTA transactions, messaging, security, and clustering
- Lighter and more flexible than many commercial enterprise application servers
Cons
- Does not provide direct XATMI or ATMI compatibility with Enduro/X
- Requires Java and Jakarta EE development rather than native C or C++ services
- Community support is less structured than Red Hat JBoss EAP support
Payara Server is a fully supported, developer-friendly, open-source application server. It's derived from GlassFish Server Open Source Edition, with additional bug fixes,...
Free and paid versions available
Oracle Tuxedo is a highly scalable and reliable application server for C, C++, and COBOL applications.
Contact Oracle for pricing
WebSphere Application Server is an enterprise Java application server for organizations running transactional, Jakarta EE, and hybrid-cloud workloads. It provides clustering, security,...
Pros
- Strong clustering, transaction, and security features for enterprise workloads
- Integrates closely with IBM Cloud, MQ, and broader IBM infrastructure
- Mature tooling and support for complex production environments
Cons
- More expensive than open-source Java application servers
- Administration is heavier than with Tomcat or lightweight runtimes
- Requires specialized expertise for tuning and troubleshooting
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Apache TomEE is a lightweight Jakarta EE application server built on Apache Tomcat. It is intended for Java developers who need enterprise...
Pros
- Lighter deployment footprint than WildFly or GlassFish
- Adds Jakarta EE capabilities to Tomcat's familiar servlet foundation
- Apache-licensed and free for commercial use
Cons
- Smaller ecosystem and community than WildFly or Payara
- Fewer built-in administration and monitoring features than full enterprise servers
- Jakarta EE version support can lag newer platform releases
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