diff --git a/registry/oc.toml b/registry/oc.toml
index d256e04bc4..cc836f3632 100644
--- a/registry/oc.toml
+++ b/registry/oc.toml
@@ -1,3 +1,32 @@
-backends = ["conda:openshift-cli", "asdf:mise-plugins/mise-oc"]
 description = "OpenShift Client CLI (oc)"
+os = ["linux", "macos", "windows"]
 test = { cmd = "oc version --client", expected = "{{version}}" }
+
+[[backends]]
+full = "http:oc"
+
+[backends.options]
+bin = "oc"
+version_list_url = "https://mirror.openshift.com/pub/openshift-v4/clients/ocp/"
+version_regex = 'href="(\d+\.\d+\.\d+)/"'
+
+[backends.options.platforms.linux-x64]
+url = "https://mirror.openshift.com/pub/openshift-v4/clients/ocp/{{ version }}/openshift-client-linux-{{ version }}.tar.gz"
+
+[backends.options.platforms.linux-arm64]
+url = "https://mirror.openshift.com/pub/openshift-v4/clients/ocp/{{ version }}/openshift-client-linux-arm64-{{ version }}.tar.gz"
+
+[backends.options.platforms.macos-x64]
+url = "https://mirror.openshift.com/pub/openshift-v4/clients/ocp/{{ version }}/openshift-client-mac-{{ version }}.tar.gz"
+
+[backends.options.platforms.macos-arm64]
+url = "https://mirror.openshift.com/pub/openshift-v4/clients/ocp/{{ version }}/openshift-client-mac-arm64-{{ version }}.tar.gz"
+
+[backends.options.platforms.windows-x64]
+url = "https://mirror.openshift.com/pub/openshift-v4/clients/ocp/{{ version }}/openshift-client-windows-{{ version }}.zip"
+
+[[backends]]
+full = "conda:openshift-cli"
+
+[[backends]]
+full = "asdf:mise-plugins/mise-oc"
diff --git a/registry/openshift-install.toml b/registry/openshift-install.toml
new file mode 100644
index 0000000000..479055a9e1
--- /dev/null
+++ b/registry/openshift-install.toml
@@ -0,0 +1,23 @@
+description = "OpenShift installer for deploying OpenShift clusters"
+os = ["linux", "macos"]
+test = { cmd = "openshift-install version", expected = "{{version}}" }
+
+[[backends]]
+full = "http:openshift-install"
+
+[backends.options]
+bin = "openshift-install"
+version_list_url = "https://mirror.openshift.com/pub/openshift-v4/clients/ocp/"
+version_regex = 'href="(\d+\.\d+\.\d+)/"'
+
+[backends.options.platforms.linux-x64]
+url = "https://mirror.openshift.com/pub/openshift-v4/clients/ocp/{{ version }}/openshift-install-linux-{{ version }}.tar.gz"
+
+[backends.options.platforms.linux-arm64]
+url = "https://mirror.openshift.com/pub/openshift-v4/clients/ocp/{{ version }}/openshift-install-linux-arm64-{{ version }}.tar.gz"
+
+[backends.options.platforms.macos-x64]
+url = "https://mirror.openshift.com/pub/openshift-v4/clients/ocp/{{ version }}/openshift-install-mac-{{ version }}.tar.gz"
+
+[backends.options.platforms.macos-arm64]
+url = "https://mirror.openshift.com/pub/openshift-v4/clients/ocp/{{ version }}/openshift-install-mac-arm64-{{ version }}.tar.gz"
diff --git a/src/backend/version_list.rs b/src/backend/version_list.rs
index 1f855f8e31..1fd6e0758c 100644
--- a/src/backend/version_list.rs
+++ b/src/backend/version_list.rs
@@ -27,9 +27,16 @@ pub async fn fetch_versions(
 ) -> Result<Vec<String>> {
     use crate::http::HTTP;
 
-    // Fetch the content
-    let response = HTTP.get_text(version_list_url).await?;
-    let content = response.trim();
+    let content = if version_regex.is_some() {
+        // When a regex is provided, the caller expects to parse arbitrary
+        // content (including HTML directory listings), so bypass the HTML rejection
+        // in get_text.
+        let resp = HTTP.get_async(version_list_url).await?;
+        resp.text().await?
+    } else {
+        HTTP.get_text(version_list_url).await?
+    };
+    let content = content.trim();
 
     // Parse versions based on format
     parse_version_list(content, version_regex, version_json_path, version_expr)
@@ -88,9 +95,13 @@ pub fn parse_version_list(
         }
     }
 
-    // If no versions extracted yet, treat as line-separated or single version
-    // This provides fallback for all cases including failed JSON parsing
-    if versions.is_empty() {
+    // If no versions extracted yet and no explicit extraction method was provided,
+    // treat as line-separated or single version.
+    // When version_regex or version_expr is set, zero matches means the content
+    // didn't contain the expected data — don't fall through to line-splitting
+    // which would emit garbage (e.g. raw HTML lines as "versions").
+    let explicit_method = version_regex.is_some() || version_expr.is_some();
+    if versions.is_empty() && !explicit_method {
         for line in trimmed.lines() {
             let line = line.trim();
             // Skip empty lines and comments