diff --git a/client/src/bundleToolshed.js b/client/src/bundleToolshed.js
new file mode 100644
index 00000000000..470965c572a
--- /dev/null
+++ b/client/src/bundleToolshed.js
@@ -0,0 +1,83 @@
+/**
+ * The big list of horrible globals we expose on window.bundleEntries.
+ *
+ * Everything that is exposed on this global variable is something that the python templates
+ * require for their hardcoded initializations. These objects are going to have to continue
+ * to exist until such time as we replace the overall application with a Vue component which
+ * will handle initializations for components individually.
+ */
+
+/* jquery and _ are exposed via expose-loader while several external plugins rely on these */
+import $ from "jquery";
+import _ from "underscore"; // eslint-disable-line no-unused-vars
+
+export { getGalaxyInstance, setGalaxyInstance } from "app";
+import { TracksterUIView } from "viz/trackster";
+export { TracksterUI } from "viz/trackster";
+import Circster from "viz/circster";
+export { PhylovizView as phyloviz } from "viz/phyloviz";
+export { SweepsterVisualization, SweepsterVisualizationView } from "viz/sweepster";
+export { createTabularDatasetChunkedView } from "mvc/dataset/data";
+import { HistoryCollection } from "mvc/history/history-model";
+export { History } from "mvc/history/history-model";
+export { HistoryContents } from "mvc/history/history-contents";
+import MultiPanel from "mvc/history/multi-panel";
+export { historyEntry as history } from "mvc/history/history-view";
+export { default as HistoryViewAnnotated } from "mvc/history/history-view-annotated";
+export { default as HistoryCopyDialog } from "mvc/history/copy-dialog";
+export { default as HDAListItemEdit } from "mvc/history/hda-li-edit";
+export { default as HDAModel } from "mvc/history/hda-model";
+export { default as LegacyGridView } from "legacy/grid/grid-view";
+export { create_chart, create_histogram } from "reports/run_stats";
+export { default as ToolshedGroups } from "toolshed/toolshed.groups";
+export { openGlobalUploadModal } from "components/Upload";
+export { runTour } from "components/Tour/runTour";
+export { Toast } from "ui/toast"; // TODO: remove when external consumers are updated/gone (IES right now)
+
+export function trackster(options) {
+    new TracksterUIView(options);
+}
+
+export function circster(options) {
+    new Circster.GalaxyApp(options);
+}
+
+export function multiHistory(options) {
+    const histories = new HistoryCollection([], {
+        includeDeleted: options.includingDeleted,
+        order: options.order,
+        limitOnFirstFetch: options.limit,
+        limitPerFetch: options.limit,
+        currentHistoryId: options.current_history_id,
+    });
+    const multipanel = new MultiPanel.MultiPanelColumns({
+        el: $("#center").get(0),
+        histories: histories,
+    });
+
+    histories.fetchFirst({ silent: true }).done(function () {
+        multipanel.createColumns();
+        multipanel.render(0);
+    });
+}
+
+// Previously wandering around as window.thing = thing in the onload script
+export { show_in_overlay, hide_modal, show_message, show_modal, Modal } from "layout/modal";
+export { make_popupmenu, make_popup_menus } from "ui/popupmenu";
+export { render_embedded_items } from "mvc/embedded-objects";
+export { default as async_save_text } from "utils/async-save-text";
+
+// Previously "chart"
+import Client from "mvc/visualization/chart/chart-client";
+export function chart(options) {
+    return new Client(options);
+}
+
+export { initMasthead } from "components/Masthead/initMasthead";
+export { mountMakoTags } from "components/Tags";
+export { mountWorkflowEditor } from "components/Workflow/Editor/mount";
+export { mountPageEditor } from "components/PageEditor/mount";
+export { mountPageDisplay } from "components/PageDisplay";
+
+// Used in common.mako
+export { default as store } from "storemodern";
diff --git a/client/webpack.config.js b/client/webpack.config.js
index 103ee959867..3961aeefcb5 100644
--- a/client/webpack.config.js
+++ b/client/webpack.config.js
@@ -36,6 +36,7 @@ module.exports = (env = {}, argv = {}) => {
         entry: {
             analysis: ["polyfills", "bundleEntries", "entry/analysis"],
             generic: ["polyfills", "bundleEntries", "entry/generic"],
+            toolshed: ["polyfills", "bundleToolshed", "entry/generic"],
         },
         output: {
             path: path.join(__dirname, "../", "/static/dist"),
@@ -129,6 +130,18 @@ module.exports = (env = {}, argv = {}) => {
                         },
                     ],
                 },
+                // Attaches the bundleToolshed to the window object.
+                {
+                    test: `${scriptsBase}/bundleToolshed`,
+                    use: [
+                        {
+                            loader: "expose-loader",
+                            options: {
+                                exposes: "bundleToolshed",
+                            },
+                        },
+                    ],
+                },
                 {
                     test: `${scriptsBase}/onload/loadConfig.js`,
                     use: [