diff --git a/otoroshi/app/next/controllers/plugins.scala b/otoroshi/app/next/controllers/plugins.scala
index a8004b0a5..0b8e253b2 100644
--- a/otoroshi/app/next/controllers/plugins.scala
+++ b/otoroshi/app/next/controllers/plugins.scala
@@ -17,7 +17,12 @@ class NgPluginsController(
   implicit val ec = env.otoroshiExecutionContext
 
   def categories() = ApiAction {
-    Ok(JsArray(NgPluginCategory.all.map(_.json)))
+    val pluginsCategories = env.scriptManager.ngNames.distinct
+      .filterNot(_.contains(".NgMerged"))
+      .flatMap(name => env.scriptManager.getAnyScript[NgNamedPlugin](s"cp:$name").toOption.map(o => (name, o)))
+      .flatMap(_._2.categories)
+    val categories = (NgPluginCategory.all ++ pluginsCategories).distinct.sortWith((a, b) => a.name.compareToIgnoreCase(b.name) < 0).map(_.json)
+    Ok(JsArray(categories))
   }
 
   def steps() = ApiAction {
diff --git a/otoroshi/app/next/plugins/api.scala b/otoroshi/app/next/plugins/api.scala
index bdb768ae6..71cf25e2f 100644
--- a/otoroshi/app/next/plugins/api.scala
+++ b/otoroshi/app/next/plugins/api.scala
@@ -245,6 +245,7 @@ object NgPluginCategory {
   case object Classic          extends NgPluginCategory { def name: String = "Classic"          }
   case object ServiceDiscovery extends NgPluginCategory { def name: String = "ServiceDiscovery" }
   case object Websocket        extends NgPluginCategory { def name: String = "Websocket"        }
+  case class Custom(name: String) extends NgPluginCategory
 
   val all = Seq(
     Classic,