ther Component Systems
- Microsoft COM (and DCOM/COM+/.Net/MSMQ/ActiveX)
- Mozilla XPCOM
- theKompany Korelib
- TrollTech Qt Component Model
- Apache 1.x module API
- Apache 2.x hooks and modules API
- Mozilla/Netscape Plugin API
- Bamboo
- GNOME Bonobo
- OpenOffice UNO
- CrystalSpace SCF
- Esoteric Component Object Model (french language)
- Linux-HA PILS
- KDE KParts
- GTK+/GLib GObject
- OpenCOM
- GNU EDMA
- Sun JavaBeans
- OMG CORBA
- Simple Object Loader
- Simple Component Object Model
- MMXX - Modules & Metaclasses ++
- iCOM
- Glyph
- Dynamically Linked Class toolkit
- C++ Object Interfacing Dispatcher
- C++ Dynamic Class Loader
- ACDK
- SOMELib
- Zope Component Architecture