VDDK contains the following open source modules and others, with license types indicated:
- Boost (BSD style license)
- Curl (MIT/X derivative license)
- Expat (BSD style license)
- FreeBSD (BSD license)
- ICU, International Components for Unicode (BSD style license)
- LibXML2 (MIT style license)
- OpenLDAP (OpenLDAP v 2.8 license)
- OpenSSL (OpenSSL license)
- Zlib (BSD license)
These open source components have the GNU library general public license:
- GetText (LGPL2.0)
- Glib (LGPL 2.0)
- LibFuse (LGPL2.0)
- LibIconv (LGPL2.0)