MyFaces is an open source Java Server Faces implementation.
Java Server Faces (JSF)) is a new MVC technology for J2EE and was implemented as JSR-127. The goal is to simplify user interface development for Java server applications. JSF is a server side component based system, that is similar in concept to ASP.NET. Components are wire up as tree, and are responsible for rendering, handling client side events and connecting to data sources.
Log4j is a logging package written in Java. This is now part of the Apache Logging Services.
SourceLabs includes the ability to capture, search, sort and correlate Log4J messages with millions of datapoints as part of its Self-Support Suite for Linux and Open Source Java
log4j
J2EE
Java
logging
SourceLabs
License:ASF2.0
Apache.Org
Geronimo or Geronimo Application Server is a J2EE server project at the Apache Software Foundation, compatible with J2EE 1.4. The project is heavily influenced and sponsored by IBM.
Geronimo has a modular architecture, designed to avoid a unnecessarily heavy server instance. The architecture consists of a microkernel and various components that are indirectly included using an Inversion of Control pattern. This modularity means that various pieces of Geronimo may be swapped around without significant impact on the rest of the application server.
Various Java middleware components are packaged to comprise a default Geronimo app-server: