diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -229,6 +229,14 @@ A certain amount of (domain- or business-specific) analysis is necessary to crea
             OpenIOC is an open framework for sharing threat intelligence. It is designed to exchange threat information both internally and externally in a machine-digestible format.
         </td>
     </tr>
+    <tr>
+        <td>
+            <a href="https://github.com/Intelworks/OpenTAXII" target="_blank">OpenTAXII</a>
+        </td>
+        <td>
+            OpenTAXII is a robust Python implementation of TAXII Services that delivers a rich feature set and a friendly pythonic API built on top of a well designed application.
+        </td>
+    </tr>
     <tr>
         <td>
             <a href="https://www.alienvault.com/open-threat-exchange" target="_blank">OTX - Open Threat Exchange</a>
@@ -284,6 +292,14 @@ A certain amount of (domain- or business-specific) analysis is necessary to crea
 ## Tools
 
 <table>
+    <tr>
+        <td>
+            <a href="https://github.com/Intelworks/cabby" target="_blank">cabby</a>
+        </td>
+        <td>
+            A simple Python library for interacting with TAXII servers.
+        </td>
+    </tr>
     <tr>
         <td>
             <a href="https://github.com/mlsecproject/combine" target="_blank">Combine</a>
@@ -316,6 +332,14 @@ A certain amount of (domain- or business-specific) analysis is necessary to crea
             Python client for the IBM X-Force Exchange.
         </td>
     </tr>
+    <tr>
+        <td>
+            <a href="https://github.com/TAXIIProject/libtaxii" target="_blank">libtaxii</a>
+        </td>
+        <td>
+            A Python library for handling TAXII Messages invoking TAXII Services.
+        </td>
+    </tr>
     <tr>
         <td>
             <a href="https://github.com/STIXProject/openioc-to-stix" target="_blank">openioc-to-stix</a>