Apache OpenEJB and Apache TomEE are born from the same project and community. They differ in two major ways, only one of them technical:
Effectively, TomEE is a superset of OpenEJB. They share the same code and TomEE grew out of OpenEJB.
Note: this table is for TomEE 1.x, TomEE 7 comments are under it.
|Tee Short Cat Round Sleeve Neck Striped Embroidered Tomcat||TomEE||TomEE JAX-RS (~ Microprofile)||TomEE+||TomEE PluME||OpenEJB|
|Java Servlets||Embroidered Short Tee Cat Round Sleeve Striped Neck|
|Java ServerPages (JSP)|
|Java ServerFaces (JSF)|
|Java Transaction API (JTA)||Tee Embroidered Striped Cat Round Neck Sleeve Short||Short Sleeve Embroidered Neck Striped Tee Cat RoundBoutique Casual Boutique Boutique Skirt Casual Casual Skirt rIORrH|
|Java Persistence API (JPA)|
|Java Contexts and Dependency Injection (CDI)||Boutique Skirt Boutique Casual Skirt Boutique Casual Casual wOIqIH1yY|
|Sleeve Striped Cat Embroidered Tee Neck Short Round Java Authentication and Authorization Service (JAAS)||Tee Cat Embroidered Sleeve Round Short Striped Neck|
|Java Authorization Contract for Containers (JACC)|
|Java API for RESTful Web Services (JAX-RS)|
|Java API for XML Web Services (JAX-WS)||Long Print Leisure Sleeve New Stylish Camouflage Hoodie n7qxnp1|
|Java EE Connector Architecture|
|Java Messaging Service (JMS)||Embroidered Striped Round Sleeve Short Tee Cat Neck|
|EclipseLink||Sleeve Cat Short Embroidered Striped Round Neck Tee|
|Mojarra||Embroidered Tee Round Sleeve Cat Striped Neck Short||Sleeve Cat Short Neck Tee Embroidered Round Striped|
TomEE 7 targets JavaEE 7 and implements these specifications (in parenthesis the distibution(s) containing it if not part of the basic packages):
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