diff --git a/en/commercial/software.raw b/en/commercial/software.raw
index 30a21540d6..e8ba93824d 100644
--- a/en/commercial/software.raw
+++ b/en/commercial/software.raw
@@ -1593,3 +1593,20 @@ commercial grade web server
 designed with exceptional performance,
 minimal machine resource requirements, and ease of administration in mind.
 FREE evaluation copies may be <A HREF="http://www.zeus.co.uk/">downloaded</A>.
+
+<!-- NAME="PortaOne" CAT="software" SUBCAT="NETWORK" -->
+<STRONG><A HREF="http://www.portaone.com">PortaOne</A></STRONG> is a
+VoIP billing solutions company. We enable Internet Telephony Service
+Providers (ITSP's) and the operators of voice networks to quickly and
+efficiently implement, manage, and deliver a wide range of billing
+solutions for IP telephony.
+<p>
+Our flagship product <a
+href="http://www.portaone.com/solutions/">PortaBilling100</a> is an
+extremely flexible customer management and billing platform that enables
+the providers of IP Telephony services to launch, price, and provision
+an array of VoIP services.
+<p>
+For further information, please see <a
+href="http://www.portaone.com">www.portaone.com</a>
+