According to a recent study conducted by BZ Research, Tomcat is used by almost two thirds of corporate Java developers. With its support for clustering & server monitoring, Tomcat has gained more popularity compared to other application servers. IBM WebSphere and RedHat JBoss came second and third in the research study.
Apache Geronimo, an open-source Java Enterprise Edition (Java EE) application server, recently released version 2.0.1. InfoQ took the opportunity to learn more about Apache Geronimo and where it fits into the application server space.
Mainsoft has released a preview of Grasshopper 2.0 that is compatible with Visual Studio 2005. Grasshopper allows Visual Studio developers to cross-compile IL into Java bytecode. Developers can then run their applications on a J2EE/Tomcat stack.
JVM clustering vendor Terracotta has released for free use their Terracotta Sessions for Tomcat. The product is based on their distributed shared objects (DSO) product which uses a hub and spoke architecture and can synchronize changes across nodes at the field level (instead of serialization). The license allows projects with up to 4 nodes in their cluster to use it for free.