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diff --git a/lib/sources/builtin.ts b/lib/sources/builtin.ts
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+++ b/lib/sources/builtin.ts
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+// Copyright (c) 2022, Compiler Explorer Authors
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+//     * Redistributions of source code must retain the above copyright notice,
+//       this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above copyright
+//       notice, this list of conditions and the following disclaimer in the
+//       documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+
+import fs from 'fs';
+import fsp from 'fs/promises';
+import path from 'path';
+
+import * as props from '../properties';
+
+import type { Source, SourceEntry } from './index';
+
+const EXAMPLES_PATH = props.get('builtin', 'sourcePath', './examples/');
+const NAME_SUBSTUTION_PATTERN = new RegExp('_', 'g');
+const ALL_EXAMPLES: SourceEntry[] = fs.readdirSync(EXAMPLES_PATH).flatMap(folder => {
+    // Recurse through the language folders
+    const folderPath = path.join(EXAMPLES_PATH, folder);
+    return fs.readdirSync(folderPath).map(file => {
+        // Recurse through the source files
+        const filePath = path.join(folderPath, file);
+        const fileName = path.parse(filePath).name;
+        return {
+            lang: folder,
+            name: fileName.replace(NAME_SUBSTUTION_PATTERN, ' '),
+            path: filePath,
+            file: fileName,
+        };
+    });
+});
+
+export const builtin: Source = {
+    name: 'Examples',
+    urlpart: 'builtin',
+    async load(language: string, filename: string): Promise<{file: string}> {
+        const example = ALL_EXAMPLES.find(e => e.lang === language && e.file === filename);
+        if (example === undefined) {
+            return {file: 'No path found'};
+        }
+        try {
+            return {file: await fsp.readFile(example.path, 'utf8')};
+        } catch (err: unknown) {
+            return {file: 'Could not read file'};
+        }
+    },
+    async list(): Promise<Omit<SourceEntry, 'path'>[]> {
+        return ALL_EXAMPLES.map(e => ({
+            lang: e.lang,
+            name: e.name,
+            file: e.file,
+        }));
+    },
+    save: null,
+};