GlassFish – OmniFish – Modern Jakarta EE Runtimes

Eclipse GlassFish

Fast, Updated and Secure!

Keep your enterprise systems updated, secure, and modern.
Run applications on the latest version of Java and Jakarta EE.
Long-term Support by OmniFish – proven GlassFish experts.
OmniFish engineers committed to leading the GlassFish project

2nd

Most used Jakarta EE server

100K+

Downloads Of Eclipse GlassFish

50+

Contributors

10+

Fixes or Enhancements Each Month

Open Source Jakarta EE Server

Runs on Java 11+, including Java 17, and Java 25
Fast startup, lightweight
Cloud-ready: Docker image, microservice distribution
Enterprise features:
- High availability with session replication and Single Sign-On
- Built-in monitoring
- Centralized administration
- Magement UI
- Database
- Messaging management

Enterprise support by core GlassFish engineers

Enterprise Support by OmniFish
24/7 critical production incident hotline.
Priority response with SLAs, 1-hour response time for critical issues.
10+ years of Long-Term Support
Monthly releases
In-depth troubleshooting, bug fixes, security fixes

How Eclipse GlassFish compares against other solutions:

Eclipse GlassFish

Lightweight, yet flexible and robust. Designed to support high availability and scalability. Since 2022, again production-ready, actively maintained and supported by OmniFish. Based on its roots in Oracle GlassFish it offers strong backward compatibility, adheres closely to open standards, and is free from proprietary vendor dependencies.

Payara compare to GlassFish

A robust solution, particularly well-suited for organizations seeking comprehensive commercial support and a Jakarta EE–first strategy. Access to official support requires migration to Payara Enterprise.

Oracle GlassFish

An open-source application server for building and deploying Java EE applications. It was maintained by Oracle and served as the Java EE reference implementation at the time. It is now discontinued and should not be confused with Eclipse GlassFish, which is the actively developed next generation of GlassFish under the Eclipse Foundation.

WildFly

Provides a stable and reliable foundation. Long-term support is available exclusively through migration to JBoss. Backward compatibility is not guaranteed, and resolving issues may require internal technical intervention

WebSphere

Reliable and feature-rich, though it involves huge overhead and significant licensing fees. It's slow to support new Java and Jakarta EE versions.

Spring Boot

Well-suited for greenfield development; however, migrating legacy Java EE applications may resemble a complete rewrite due to significant architectural differences.

Apache TomEE

Lightweight in design, but may become restrictive when scaling or managing complex enterprise workloads. Lags in adopting new features and updated Jakarta EE versions.

Quarkus

Popular for container-native applications, well-suited for greenfield development. Extremely fast startup, great developer experience. Handling legacy monolithic systems can be difficult. Migrating older Java EE applications is feasible, though often complex.

WebLogic

Robust and feature-rich, but associated with significant overhead and licence cost. Lags in supporting new Java versions and adopting new Jakarta EE versions.

Piranha Cloud

Highly extensible and flexible, with extremely fast startup times and easy embedding in serverless functions. Migration of smaller Java EE applications is straightforward, migrating legacy systems is challenging. It is less mature compared to other options, suitable to complement other solutions.in specific cases.

GlassFish is flourishing at the eclipse foundation

The Eclipse GlassFish application server has been a compatible product for every Jakarta EE release, and it has very deep roots in the Java world.

Today, the GlassFish server is flourishing as an opensource project at the Eclipse Foundation, it’s ready and reliable for production deployments, and is being updated to strengthen its merits as an application server.

The OmniFish team is devoted to improve GlassFish and regularly contributes to the GlassFish project at the Eclipse Foundation to fix defects and vulnerabilities, improve production performance, and introduce new features.