diff --git a/projects/kiss-vscode/src/commands/OS.kiss b/projects/kiss-vscode/src/commands/OS.kiss
new file mode 100644
index 00000000..fa65a5a7
--- /dev/null
+++ b/projects/kiss-vscode/src/commands/OS.kiss
@@ -0,0 +1,34 @@
+// Operating system commands. Hopefully cross-compatible with Windows, Mac, and Ubuntu.
+
+// Before you use commands in this file:
+/* (loadFrom "kiss-vscode" "src/commands/OS.kiss") */
+
+// Open any file through the operating system's default program.
+// Register this command as follows:
+/*
+(registerCommand "desired name with [a]ny [b]indings" osOpenFile)
+// Or for a specific file:
+(registerCommand "desired name with [a]ny [b]indings" ->[&opt _] (osOpenFile "path/to/file.any"))
+*/
+(function :Void osOpenFile [&opt :String file]
+    (withValueOrInputBox file
+        (case (Sys.systemName)
+            ("Windows" (assertProcess "cmd.exe" ["/C" "start" file]))
+            ("Mac" (assertProcess "open" [file]))
+            ("Linux" (assertProcess "xdg-open" [file]))
+            (otherwise (throw "Unsupported operating system")))))
+
+/*
+(registerCommand "desired name with [a]ny [b]indings" osOpenFileInDir)
+// Or for a specific directory:
+(registerCommand "desired name with [a]ny [b]indings" ->[&opt _] (osOpenFileInDir "path/to/dir"))
+*/
+(function :Void osOpenFileInDir [&opt :String dir]
+    (withValueOrInputBox dir
+        (awaitLet [dirOrFile (quickPick (sys.FileSystem.readDirectory dir))]
+            (let [dirOrFile (joinPath dir dirOrFile)]
+                (cond
+                    ((sys.FileSystem.isDirectory dirOrFile)
+                        (osOpenFileInDir dirOrFile))
+                    (true
+                        (osOpenFile ~dirOrFile)))))))
\ No newline at end of file