MTS vs EJB by Gopalan Suresh Raj
A comparison of Enterprise JavaBeans (EJB) & The Microsoft Transaction Server (MTS) models. By Gopalan Suresh Raj.

Scarab: Lightweight Distributed Objects
A lightweight scheme for representing distributed objects providing both a compact binary protocol as well as XML-based serialization. Used as part of the Casbah project.

GnuStep
An implementation of distributed objects written for GNU Objective C. It is similar to NeXTstep's Distributed Objects system.

Comparing DCE and CORBA
Summarizes the main features of DCE and CORBA and presents the most important difference between them.