diff --git a/SourceCode.md b/SourceCode.md
index fadfd4ff..2ca061ed 100644
--- a/SourceCode.md
+++ b/SourceCode.md
@@ -6,3 +6,19 @@ permalink: /wiki/SourceCode/
 
 Qubes Source Code Repositories
 ==============================
+
+All the Qubes code is kept in GIT repositories. We divided the project into several components, each of which has its own separate repository:
+
+-   `core.git` -- the core Qubes infrastructure responsible for VM management, VM temaplates, fs sharing, etc.
+-   `gui.git` -- GUI virtualization, both Dom0 and VM side.
+-   `template-builder.git` - scripts and other files used to create Qubes templates and NetVM images.
+
+You can browse the repositories [​on line via GitWeb](http://gitweb.qubes-os.org/gitweb/). The Qubes official repositories are in the `mainstream` directory.
+
+To clone a repository:
+
+``` {.wiki}
+git clone git://
+```
+
+Currently the preferred way of contributing to the project is by sending a patch via the project's mailing list (`git format-patch`).