diff --git a/docs/usage.rst b/docs/usage.rst
index 7b1f362..3ac4e4b 100644
--- a/docs/usage.rst
+++ b/docs/usage.rst
@@ -825,6 +825,17 @@ strip_release
 provided
   Instead of the package version, return the version this package provides. Its value is what the package provides, and ``strip_release`` takes effect too. This is best used with libraries.
 
+Check Open Vsx
+~~~~~~~~~~~~~~~
+::
+
+  source = "openvsx"
+
+Check `Open Vsx <https://open-vsx.org/>`_ for updates.
+
+openvsx
+  The extension's Unique Identifier on open-vsx.org, e.g. ``ritwickdey.LiveServer``.
+  
 Combine others' results
 ~~~~~~~~~~~~~~~~~~~~~~~
 ::
diff --git a/nvchecker_source/openvsx.py b/nvchecker_source/openvsx.py
new file mode 100644
index 0000000..7b65119
--- /dev/null
+++ b/nvchecker_source/openvsx.py
@@ -0,0 +1,13 @@
+# MIT licensed
+# Copyright (c) 2013-2021 Th3Whit3Wolf <the.white.wolf.is.1337@gmail.com>, et al.
+
+API_URL = 'https://open-vsx.org/api/%s/%s'
+
+async def get_version(name, conf, *, cache, **kwargs):
+  name = conf.get('openvsx') or name
+  splitName = name.split('.')
+  publisher = splitName[0]
+  extension = splitName[1]
+  data = await cache.get_json(API_URL % (publisher, extension))
+  version = data['version']
+  return version
diff --git a/tests/test_openvsx.py b/tests/test_openvsx.py
new file mode 100644
index 0000000..faac45f
--- /dev/null
+++ b/tests/test_openvsx.py
@@ -0,0 +1,10 @@
+# MIT licensed
+# Copyright (c) 2013-2021 Th3Whit3Wolf <the.white.wolf.is.1337@gmail.com>, et al.
+
+import pytest
+pytestmark = [pytest.mark.asyncio, pytest.mark.needs_net]
+
+async def test_openvsx(get_version):
+    assert await get_version("usernamehw.indent-one-space", {
+        "source": "openvsx",
+    }) == "0.2.6"
\ No newline at end of file