BlackConnect  
   Java-to-XPCOM bridge that allows interoperability between Java and XPCOM components.
   http://www.mozilla.org/projects/blackwood/connect/

rbXPCOM  
   Ruby language bindings. Ruby is an object oriented scripting language developed by Yukihiro Matsumoto.
   http://rbxpcom.mozdev.org

plXPCOM  
   Perl language bindings. Allows the use of XPCOM objects from Perl, as well as the ability to implement XPCOM interfaces in Perl. (Jumpline.com, Inc.)
   http://plxpcom.mozdev.org

XPConnect  
   Javascript language bindings. It allows Javascript objects to transparently access and manipulate XPCOM objects and also enables Javascript objects to implement XPCOM compliant interfaces.
   http://www.mozilla.org/scriptable/

Evaluation of Interprocess Communication Methods in a Component-based Environment  
   This thesis evaluates several of the available techniques for interprocess communications (IPC) in a prototype system for distributed components using XPCOM as the basis. It also takes into consideration marshalling, the transfer of complex data structure
   http://www.lysator.liu.se/~gargamel/exjobb/

XPCOM, Part 5  
   Puts the final touches on the example XPCOM implementation, shows how to install the component, and demonstrates simple testing methods using XPCShell.
   http://www.ibm.com/developerworks/components/library/co-xpcom5.html

XPCOM, Part 4  
   Covers component authoring by using a GPS receiver as an example component.
   http://www.ibm.com/developerworks/components/library/co-xpcom4/index.html

XPCOM, Part 3  
   Building the XPCOM development environment.
   http://www.ibm.com/developerworks/components/library/co-xpcom3.html

XPCOM, Part 1  
   Introduction to XPCOM, Mozilla's component architecture.
   http://www.ibm.com/developerworks/components/library/co-xpcom.html

Getting Started with PyXPCOM, Part 1  
   Covers the installation of XPCOM and PyXPCOM.
   http://www.ibm.com/developerworks/components/library/co-pyxp1.html

Getting Started with PyXPCOM, Part 2  
   Explains how to access Mozilla objects as a client.
   http://www.ibm.com/developerworks/components/library/co-pyxp2.html

Getting Started with PyXPCOM, Part 3  
   Covers the implementation of XPCOM objects on the server side.
   http://www.ibm.com/developerworks/components/library/co-pyxp3/index.html

XPCOM, Part 2  
   Introduction to XPCOM programming: type libraries, the xpidl compiler, and interface discovery.
   http://www.ibm.com/developerworks/components/library/co-xpcom2.html

Mozilla XPCOM Reference  
   Computer generated reference of Mozilla components and interfaces.
   http://www.xulplanet.com/references/xpcomref/

MySQL XPCOM  
   An XPCOM/XPConnect implementation of mysqlclient API 3.x. The goal of the project is to provide solid and full mysqlclient interface for JavaScript applications. [Open Source, LGPL]
   http://mysqlxpcom.mozdev.org

XPCOM Component Viewer  
   Allows to navigate through the components and interfaces included in a Mozilla based browser.
   http://hacksrus.com/~ginda/cview/

Xanthes  
   XPCOM wrapper around the Xerces validating xml parser. [Open Source, MPL, GPL]
   http://xanthes.mozdev.org

PyXPCOM  
   Python language bindings. (ActiveState)
   http://public.activestate.com/pyxpcom/