JBoss is the market leader in open source middleware software. JBoss is the most
popular enterprise middleware system for developers, independent software vendors
(ISVs) and enterprises alike. It is the ideal platform for developing and deploying
innovative and scalable java applications. Some of the advantages are:
Typical challenges associated with proprietary application servers:

More capability,
less costs – Delivered via subscription just for support and not for the license

No vendor
lock-in – The development process is open. The technology is open. There are no
secrets, no surprises, no lock-in

Award-winning
support – Ranked highest in custom satisfaction over Oracle, IBM, and BEA

Performance
–More customers trust JBoss with their mission critical applications

Modular
Architecture – Robust enough to handle large, complex, JavaEE workloads, yet agile
and flexible enough to run lighter ones
With JBoss, you can build your next generation middleware architecture at lower
TCO.