Eclipse GlassFish is a Jakarta EE compatible implementation sponsored by the Eclipse Foundation. Eclipse GlassFish 5.1 is also Java EE 8 Compatible.
See the press release and related blog posts (here and here).
See the Jakarta EE home-page.
The Eclipse GlassFish Project is open for contributions and your help is greatly appreciated. The easiest way to contribute to the Eclipse GlassFish documentation is by opening an issue that contains feedback and review comments. Contributions to the source code are also welcome.
Please review the following links: