diff --git a/core/modules/widgets/action-listops.js b/core/modules/widgets/action-listops.js
new file mode 100644
index 000000000..c88130b39
--- /dev/null
+++ b/core/modules/widgets/action-listops.js
@@ -0,0 +1,89 @@
+/*\
+title: $:/core/modules/widgets/action-listops.js
+type: application/javascript
+module-type: widget
+
+Action widget to apply list operations to any tiddler field (defaults to the 'tags' field of the current tiddler)
+
+\*/
+(function () {
+
+  /*jslint node: true, browser: true */
+  /*global $tw: false */
+  "use strict";
+
+  var Widget = require("$:/core/modules/widgets/widget.js").widget;
+
+  var ActionListopsWidget = function (parseTreeNode, options) {
+    this.initialise(parseTreeNode, options);
+  };
+
+  /*
+  Inherit from the base widget class
+  */
+  ActionListopsWidget.prototype = new Widget();
+
+  /*
+  Render this widget into the DOM
+  */
+  ActionListopsWidget.prototype.render = function (parent, nextSibling) {
+    this.computeAttributes();
+    this.execute();
+  };
+
+  /*
+  Compute the internal state of the widget
+  */
+  ActionListopsWidget.prototype.execute = function () {
+    // Get our parameters
+    this.target = this.getAttribute("$tiddler", this.getVariable("currentTiddler"));
+    this.filter = this.getAttribute("$filter");
+    this.subfilter = this.getAttribute("$subfilter");
+    this.listField = this.getAttribute("$list", "list");
+    this.listIndex = this.getAttribute("$index");
+    this.filtertags = this.getAttribute("$tags");
+  };
+
+  /*
+  Refresh the widget by ensuring our attributes are up to date
+  */
+  ActionListopsWidget.prototype.refresh = function (changedTiddlers) {
+    var changedAttributes = this.computeAttributes();
+    if (changedAttributes.$tiddler || changedAttributes.$filter || changedAttributes.$subfilter || changedAttributes.$list || changedAttributes.$index || changedAttributes.$tags) {
+      this.refreshSelf();
+      return true;
+    }
+    return this.refreshChildren(changedTiddlers);
+  };
+
+  /*
+  Invoke the action associated with this widget
+  */
+  ActionListopsWidget.prototype.invokeAction = function (triggeringWidget, event) {
+    //try this
+    var field = this.listField,
+        index = undefined,
+        type = "!!",
+        list = this.listField;
+    if (this.listIndex) {
+        field = undefined;
+        index = this.listIndex; type = "##";
+        list = this.listIndex;
+    }
+    if (this.filter) {
+      this.wiki.setText(this.target, field, index, $tw.utils.stringifyList(this.wiki.filterTiddlers(this.filter, this)));
+    }
+    if (this.subfilter) {
+      var subfilter = "[list[" + this.target + type + list + "]] " + this.subfilter;
+      this.wiki.setText(this.target, field, index, $tw.utils.stringifyList(this.wiki.filterTiddlers(subfilter, this)));
+    }
+    if (this.filtertags) {
+      var tagfilter = "[list[" + this.target + "!!tags]] " + this.filtertags;
+      this.wiki.setText(this.target, "tags", undefined, $tw.utils.stringifyList(this.wiki.filterTiddlers(tagfilter, this)));
+    }
+    return true; // Action was invoked
+  };
+
+  exports["action-listops"] = ActionListopsWidget;
+
+})();