diff --git a/server/main.ts b/server/main.ts
index 5d19ec5..2de66f6 100644
--- a/server/main.ts
+++ b/server/main.ts
@@ -120,6 +120,33 @@ router.route("/api/pack")
     return new Response(JSON.stringify({ packName }), { status: 200 });
   });
 
+router.route("/api/pack/namespaces")
+  .get(async () => {
+    using store = new BearMetalStore();
+
+    const namespaces = Array.from(Deno.readDirSync(store.get("packlocation")))
+      .filter((dir) => dir.isDirectory).map((dir) => dir.name);
+    return new Response(JSON.stringify(namespaces), { status: 200 });
+  })
+  .post(async (req) => {
+    using store = new BearMetalStore();
+
+    const namespace = await req.text();
+    if (!namespace) {
+      return new Response("Namespace is required", { status: 400 });
+    }
+
+    const namespaceRx = /^[a-zA-Z0-9_\-]+$/;
+    if (!namespaceRx.test(namespace)) {
+      return new Response(
+        "Namespace must only contain letters, numbers, underscores, and dashes",
+        { status: 400 },
+      );
+    }
+    await ensureDir(store.get("packlocation") + "/" + namespace);
+    return new Response(null, { status: 200 });
+  });
+
 router.route("/api/packs")
   .get(async () => {
     using store = new BearMetalStore();
diff --git a/src/app.tsx b/src/app.tsx
index 02f867b..859574e 100644
--- a/src/app.tsx
+++ b/src/app.tsx
@@ -7,7 +7,7 @@ export function App() {
     <BrowserRouter>
       <Routes>
         <Route path="/" Component={Home} />
-        <Route path="/editor" Component={Editor} />
+        <Route path="/editor/*" Component={Editor} />
       </Routes>
     </BrowserRouter>
   );
diff --git a/src/atoms/namespace.ts b/src/atoms/namespace.ts
new file mode 100644
index 0000000..cde3e5e
--- /dev/null
+++ b/src/atoms/namespace.ts
@@ -0,0 +1,3 @@
+import { atom } from "jotai";
+
+export const namespaceAtom = atom<string>("");
diff --git a/src/components/editor/namespaceModal.tsx b/src/components/editor/namespaceModal.tsx
new file mode 100644
index 0000000..110f7fb
--- /dev/null
+++ b/src/components/editor/namespaceModal.tsx
@@ -0,0 +1,62 @@
+import { useState } from "preact/hooks";
+import { fetchJson } from "../../util/fetchJson.ts";
+import { Loader } from "../loader.tsx";
+import { Modal } from "../modal.tsx";
+import useSwr from "swr";
+
+export const NamespaceModal = ({ close }: { close: () => void }) => {
+  const { data: namespaces, isLoading } = useSwr<string[]>(
+    "/api/pack/namespaces",
+    fetchJson,
+  );
+  const [namespace, setNamespace] = useState("");
+  const [invalid, setInvalid] = useState("");
+
+  const createNamespace = async (ns?: string) => {
+    const res = await fetch("/api/pack/namespaces", {
+      method: "POST",
+      body: ns ?? namespace,
+    });
+
+    if (res.status === 200) {
+      return close();
+    }
+
+    setInvalid(await res.text());
+  };
+
+  return (
+    <Modal>
+      {isLoading
+        ? <Loader msg="Checking existing namespaces..." />
+        : (
+          <div class="flex flex-col gap-2">
+            <p>Create a new namespace</p>
+            {!namespaces?.includes("minecraft") &&
+              (
+                <button
+                  class="w-full"
+                  onClick={() => createNamespace("minecraft")}
+                >
+                  Create default minecraft namespace
+                </button>
+              )}
+            <form
+              onSubmit={(e) => {
+                e.preventDefault();
+                createNamespace();
+              }}
+              class="flex gap-2"
+            >
+              <input
+                type="text"
+                value={namespace}
+                onInput={(e) => setNamespace((e.target as any).value)}
+              />
+              <button type="submit">Create</button>
+            </form>
+          </div>
+        )}
+    </Modal>
+  );
+};
diff --git a/src/components/editor/selector.tsx b/src/components/editor/selector.tsx
new file mode 100644
index 0000000..1d4b6d3
--- /dev/null
+++ b/src/components/editor/selector.tsx
@@ -0,0 +1,3 @@
+export const Selector = () => {
+  return <div>Selector</div>;
+};
diff --git a/src/components/loader.tsx b/src/components/loader.tsx
index d2cf620..b288fb6 100644
--- a/src/components/loader.tsx
+++ b/src/components/loader.tsx
@@ -1,4 +1,4 @@
-import { classList } from "../classes.ts";
+import { classList } from "../util/classes.ts";
 
 interface IProps {
   msg?: string;
diff --git a/src/classes.ts b/src/util/classes.ts
similarity index 100%
rename from src/classes.ts
rename to src/util/classes.ts
diff --git a/src/util/fetchJson.ts b/src/util/fetchJson.ts
new file mode 100644
index 0000000..d95bcbd
--- /dev/null
+++ b/src/util/fetchJson.ts
@@ -0,0 +1,2 @@
+export const fetchJson = (url: string, init?: RequestInit) =>
+  fetch(url, init).then((res) => res.json());
diff --git a/src/views/editor.tsx b/src/views/editor.tsx
index e1dae76..b3e15a5 100644
--- a/src/views/editor.tsx
+++ b/src/views/editor.tsx
@@ -3,11 +3,23 @@ import { Modal } from "../components/modal.tsx";
 import { LabelledHr } from "../components/labelledHr.tsx";
 import { PacksList } from "../components/packsList.tsx";
 import { PackInfo } from "../components/packInfo.tsx";
+import { useAtom } from "jotai";
+import { namespaceAtom } from "../atoms/namespace.ts";
+import { Route, Routes } from "react-router-dom";
+import { Selector } from "../components/editor/selector.tsx";
+import { NamespaceModal } from "../components/editor/namespaceModal.tsx";
 
 export const Editor = () => {
   const [packName, setPackName] = useState("");
   const [loading, setLoading] = useState(true);
   const [namespaces, setNamespaces] = useState<string[]>([]);
+  const [namespace, setNamespace] = useAtom(namespaceAtom);
+
+  const fetchNamespaces = async () => {
+    const res = await fetch("/api/pack/namespaces");
+    const json = await res.json();
+    setNamespaces(json);
+  };
 
   useEffect(() => {
     document.title = "BearMetal Packer";
@@ -15,6 +27,7 @@ export const Editor = () => {
       setPackName(json.packName);
       setLoading(false);
     });
+    fetchNamespaces();
   }, []);
 
   const setPackNameThing = async (event: SubmitEvent) => {
@@ -56,9 +69,11 @@ export const Editor = () => {
     );
   }
 
+  const [showNamespaceModal, setShowNamespaceModal] = useState(false);
+
   return (
     <div class="flex h-full">
-      <div class="w-1/4 p-4 bg-primary-600">
+      <div class="w-1/4 p-4 bg-mixed-400">
         <div class="text-center">
           <h1 class="text-2xl">BearMetalPacker</h1>
           <PackInfo packName={packName} />
@@ -67,14 +82,39 @@ export const Editor = () => {
         <div>
           <ul class="w-full">
             {namespaces.map((namespace) => (
-              <li class="cursor-pointer even:bg-black/5" // onClick={() => setNamespace(namespace)}
+              <li
+                class="text-lg cursor-pointer even:bg-black/5"
+                onClick={() => setNamespace(namespace)}
               >
                 {namespace}
               </li>
             ))}
+            <li class="mt-4">
+              <button onClick={() => setShowNamespaceModal(true)}>
+                New Namespace
+              </button>
+            </li>
           </ul>
+          {showNamespaceModal && (
+            <NamespaceModal
+              close={() => {
+                setShowNamespaceModal(false);
+                fetchNamespaces();
+              }}
+            />
+          )}
         </div>
       </div>
+      <div>
+        {!namespace ? <div>No namespace set</div> : (
+          <div>
+            <h3 class="text-lg">Namespace: {namespace}</h3>
+            <Routes>
+              <Route path="/editor" Component={Selector} />
+            </Routes>
+          </div>
+        )}
+      </div>
     </div>
   );
 };