diff --git a/RelatedProjects.md b/RelatedProjects.md
index 170ed07..dbe3ceb 100644
--- a/RelatedProjects.md
+++ b/RelatedProjects.md
@@ -21,6 +21,7 @@ There are several projects to extend Tahoe-LAFS or integrate it with other tools
  * [RubyTahoe](http://github.com/trel/rubytahoe/) -- Terrell Russell's fork of David's fork of Ian's ruby client library, now with fewer warnings! 
  * [canopy](http://github.com/thraxil/canopy) -- A Django frontend to Tahoe-LAFS
  * [pyfilesystem](http://code.google.com/p/pyfilesystem/) has a Tahoe-LAFS backend now thanks to slush
+ * [DDBFS](http://forge.bearstech.com/trac/wiki/DDBFS) is a proof of concept for a data storage middleware
 
 # Tips and Tricks