diff --git a/README.md b/README.md
index 3afc493..df2d7b2 100644
--- a/README.md
+++ b/README.md
@@ -93,6 +93,10 @@ A curated list of awesome malware analysis tools and resources. Inspired by
 
 * [Combine](https://github.com/mlsecproject/combine) - Tool to gather Threat 
   Intelligence indicators from publicly available sources.
+* [IOC Editor](https://www.mandiant.com/resources/download/ioc-editor/) -
+  A free editor for XML IOC files, from Mandiant.
+* [ioc_writer](https://github.com/mandiant/ioc_writer) - Python library for
+  working with OpenIOC objects, from Mandiant.
 * [threataggregator](https://github.com/jpsenior/threataggregator) -
   Aggregates security threats from a number of sources, including some of
   those listed below in [other resources](#other-resources).