diff --git a/src/components/layout/showCategories.svelte b/src/components/layout/showCategories.svelte
new file mode 100644
index 0000000..97e64ac
--- /dev/null
+++ b/src/components/layout/showCategories.svelte
@@ -0,0 +1,41 @@
+<script lang="ts">
+  import type { tCategory } from "@/types/categories";
+
+  import { cn } from "@/utils/cn";
+  import { svgs } from "@/data/svgs";
+  import { page } from "$app/state";
+  import { getCategories } from "@/data";
+  import { sidebarItemClasses } from "./sidebarItemClasses";
+
+  // Get category counts:
+  const categories: tCategory[] = getCategories();
+  let categoryCounts: Record<string, number> = {};
+  categories.forEach((category) => {
+    categoryCounts[category] = svgs.filter((svg) =>
+      svg.category.includes(category),
+    ).length;
+  });
+</script>
+
+{#each categories.sort() as category}
+  <a
+    href={`/directory/${category.toLowerCase()}`}
+    data-sveltekit-preload-data
+    class={cn(
+      sidebarItemClasses.base,
+      page.url.pathname === `/directory/${category.toLowerCase()}` &&
+        sidebarItemClasses.active,
+      "pr-3",
+    )}
+  >
+    <p class="truncate">{category}</p>
+    <span
+      class={cn(
+        "dark:bg-dark rounded-lg border border-neutral-200 bg-white px-2 py-0.5 font-mono text-xs font-medium text-neutral-600 shadow-sm dark:border-neutral-800 dark:bg-neutral-900 dark:text-neutral-400",
+        page.url.pathname && "border-transparent",
+      )}
+    >
+      {categoryCounts[category]}
+    </span>
+  </a>
+{/each}
diff --git a/src/components/layout/showSidebarLinks.svelte b/src/components/layout/showSidebarLinks.svelte
new file mode 100644
index 0000000..304917b
--- /dev/null
+++ b/src/components/layout/showSidebarLinks.svelte
@@ -0,0 +1,22 @@
+<script lang="ts">
+  import { cn } from "@/utils/cn";
+  import { page } from "$app/state";
+
+  import { sidebarLinks } from "./sidebarLinks";
+  import { sidebarItemClasses } from "./sidebarItemClasses";
+</script>
+
+{#each sidebarLinks as sidebarLink}
+  <a
+    href={sidebarLink.href}
+    data-sveltekit-preload-data
+    class={cn(
+      sidebarItemClasses.base,
+      "justify-start space-x-3",
+      page.url.pathname === sidebarLink.href && sidebarItemClasses.active,
+    )}
+  >
+    <sidebarLink.icon size={16} />
+    <p class="truncate">{sidebarLink.title}</p>
+  </a>
+{/each}
diff --git a/src/components/layout/sidebar.svelte b/src/components/layout/sidebar.svelte
new file mode 100644
index 0000000..ba560e1
--- /dev/null
+++ b/src/components/layout/sidebar.svelte
@@ -0,0 +1,30 @@
+<script lang="ts">
+  import { cn } from "@/utils/cn";
+
+  import { Separator } from "@/components/ui/separator";
+  import ShowCategories from "@/components/layout/showCategories.svelte";
+  import ShowSidebarLinks from "@/components/layout/showSidebarLinks.svelte";
+</script>
+
+<section>
+  <aside
+    class={cn(
+      "fixed left-0 h-[calc(100vh-5.4rem)]",
+      "overflow-x-hidden",
+      "w-54 pr-2 pl-3",
+      "flex flex-col space-y-3",
+      "bg-neutral-100 dark:bg-neutral-950",
+    )}
+  >
+    <nav class="flex flex-col space-y-0.5">
+      <ShowSidebarLinks />
+    </nav>
+    <Separator orientation="horizontal" />
+    <nav class="flex flex-col space-y-0.5 overflow-y-auto">
+      <ShowCategories />
+    </nav>
+  </aside>
+  <main class={cn("mr-4 mb-4 ml-56", "overflow-hidden")}>
+    <slot />
+  </main>
+</section>
diff --git a/src/components/layout/sidebarItemClasses.ts b/src/components/layout/sidebarItemClasses.ts
new file mode 100644
index 0000000..7a668ce
--- /dev/null
+++ b/src/components/layout/sidebarItemClasses.ts
@@ -0,0 +1,13 @@
+import { cn } from "@/utils/cn";
+
+export const sidebarItemClasses = {
+  base: cn(
+    "rounded-md px-2 py-1.5",
+    "flex w-full items-center justify-between space-x-3 text-sm",
+    "text-neutral-600 dark:text-neutral-400",
+    "hover:text-black dark:hover:text-white",
+  ),
+  active: cn(
+    "rounded-lg shadow-sm text-black dark:text-white border border-neutral-200 bg-white font-medium dark:border-neutral-800 dark:bg-neutral-800",
+  ),
+};
diff --git a/src/components/layout/sidebarLinks.ts b/src/components/layout/sidebarLinks.ts
new file mode 100644
index 0000000..1e9981b
--- /dev/null
+++ b/src/components/layout/sidebarLinks.ts
@@ -0,0 +1,27 @@
+import BoxIcon from "@lucide/svelte/icons/box";
+import HouseIcon from "@lucide/svelte/icons/house";
+import CloudIcon from "@lucide/svelte/icons/cloud";
+import HeartIcon from "@lucide/svelte/icons/heart";
+
+export const sidebarLinks = [
+  {
+    title: "Home",
+    href: "/",
+    icon: HouseIcon,
+  },
+  {
+    title: "Favorites",
+    href: "/favorites",
+    icon: HeartIcon,
+  },
+  {
+    title: "API",
+    href: "/api",
+    icon: CloudIcon,
+  },
+  {
+    title: "Extensions",
+    href: "/extensions",
+    icon: BoxIcon,
+  },
+];