diff --git a/etc/requirements_dev.txt b/etc/requirements_dev.txt
index aacc8b94..c8be5931 100644
--- a/etc/requirements_dev.txt
+++ b/etc/requirements_dev.txt
@@ -1,4 +1,6 @@
 ipython==0.13.1
+tornado==2.4.1
+pyzmq==2.2.0.1
 
 # Testing
 nose==1.2.1
diff --git a/etc/requirements_extra.txt b/etc/requirements_extra.txt
new file mode 100644
index 00000000..8a73dc9f
--- /dev/null
+++ b/etc/requirements_extra.txt
@@ -0,0 +1,8 @@
+# Extra modules, goodies for algorithms.
+
+matplotlib==1.2.0
+scipy==0.11.0
+scikits.learn==0.8.1
+scikits.statsmodels==0.3.1
+statsmodels==0.5.0
+patsy==0.1.0