diff --git a/cartridges/importer/source.py b/cartridges/importer/source.py
index 74ee37b..eab0600 100644
--- a/cartridges/importer/source.py
+++ b/cartridges/importer/source.py
@@ -76,7 +76,7 @@ class Source(Iterable):
 
     @property
     def is_available(self) -> bool:
-        return sys.platform in self.available_on
+        return any(sys.platform.startswith(platform) for platform in self.available_on)
 
     def make_executable(self, *args, **kwargs) -> str:
         """
@@ -120,14 +120,15 @@ class URLExecutableSource(ExecutableFormatSource):
 
     @property
     def executable_format(self) -> str:
-        match sys.platform:
-            case "win32":
-                return "start " + self.url_format
-            case "linux":
-                return "xdg-open " + self.url_format
-            case "darwin":
-                return "open " + self.url_format
-            case other:
-                raise NotImplementedError(
-                    f"No URL handler command available for {other}"
-                )
+        if sys.platform.startswith("win32"):
+            return f"start {self.url_format}"
+
+        if sys.platform.startswith("linux"):
+            return f"xdg-open {self.url_format}"
+
+        if sys.platform.startswith("darwin"):
+            return f"open {self.url_format}"
+
+        raise NotImplementedError(
+            f"No URL handler command available for {sys.platform}"
+        )
diff --git a/cartridges/main.py b/cartridges/main.py
index f936a0d..4c501cd 100644
--- a/cartridges/main.py
+++ b/cartridges/main.py
@@ -58,7 +58,7 @@ from cartridges.store.store import Store
 from cartridges.utils.run_executable import run_executable
 from cartridges.window import CartridgesWindow
 
-if sys.platform == "darwin":
+if sys.platform.startswith("darwin"):
     from AppKit import NSApp  # type: ignore
     from PyObjCTools import AppHelper
 
@@ -94,7 +94,7 @@ class CartridgesApplication(Adw.Application):
 
         self.add_main_option_entries((search, launch))
 
-        if sys.platform == "darwin":
+        if sys.platform.startswith("darwin"):
             if settings := Gtk.Settings.get_default():
                 settings.props.gtk_decoration_layout = "close,minimize,maximize:"
 
@@ -405,7 +405,7 @@ class CartridgesApplication(Adw.Application):
                     f"app.{action[0]}" if scope == self else f"win.{action[0]}",
                     (
                         tuple(s.replace("<primary>", "<meta>") for s in action[1])
-                        if sys.platform == "darwin"
+                        if sys.platform.startswith("darwin")
                         else action[1]
                     ),
                 )