--- a/README.txt	Tue Dec 25 12:46:39 2012 -0800
+++ b/README.txt	Thu Apr 11 13:50:51 2013 -0700
@@ -3,6 +3,38 @@
 
 WSGI graph server
 
+
+Graph exchange formats:
+
+* http://en.wikipedia.org/wiki/Graph_Modelling_Language
+* http://en.wikipedia.org/wiki/GraphML
+* http://en.wikipedia.org/wiki/Trivial_Graph_Format
+* http://www.gupro.de/GXL/ , http://en.wikipedia.org/wiki/GXL
+* http://en.wikipedia.org/wiki/Dot_language (Graphviz)
+
+
+Python packages related to graphs:
+
+* graph-tool: http://en.wikipedia.org/wiki/Graph-tool ,
+  https://pypi.python.org/pypi/graph-tool
+
+
+External libraries and tools
+
+* Graphviz
+* tulip: http://tulip.labri.fr/TulipDrupal/
+
+--
+
+* see also http://k0s.org/links/?q=graph
+
+Parallel Efforts
+----------------
+
+* http://k0s.org/hg/IntentMadeManifest/
+
+
+
 ----
 
 Jeff Hammel