diff --git a/src/cli/cmd-ls.ts b/src/cli/cmd-ls.ts
index b2d75848..59d4fdc8 100644
--- a/src/cli/cmd-ls.ts
+++ b/src/cli/cmd-ls.ts
@@ -1,8 +1,13 @@
 import { Command } from "@commander-js/extra-typings";
 import { Logger } from "npmlog";
+import { loadProjectManifestUsing } from "../app/get-dependencies";
+import { partialApply } from "../domain/fp-utils";
 import type { DebugLog } from "../domain/logging";
+import { makePackageSpec } from "../domain/package-spec";
+import { recordEntries } from "../domain/record-utils";
 import type { ReadTextFile } from "../io/fs";
 import { withErrorLogger } from "./error-logging";
+import { workDirOpt } from "./opt-wd";
 
 /**
  * Makes the `openupm ls` cli command with the given dependencies.
@@ -16,6 +21,12 @@ export function makeLsCmd(
   debugLog: DebugLog,
   log: Logger
 ) {
+  const getDependencies = partialApply(
+    loadProjectManifestUsing,
+    readTextFile,
+    debugLog
+  );
+
   return new Command("ls")
     .aliases(["list"])
     .summary("list all currently installed packages")
@@ -23,5 +34,17 @@ export function makeLsCmd(
       `Print the names and versions of all installed packages.
 openupm ls`
     )
-    .action(withErrorLogger(log, async function (options) {}));
+    .addOption(workDirOpt)
+    .action(
+      withErrorLogger(log, async function (options) {
+        const projectDirectory = options.chdir;
+        const manifest = await getDependencies(projectDirectory);
+
+        const dependencies = recordEntries(manifest.dependencies ?? {});
+
+        dependencies.forEach(([name, version]) => {
+          log.notice("", makePackageSpec(name, version));
+        });
+      })
+    );
 }
diff --git a/test/e2e/ls.test.ts b/test/e2e/ls.test.ts
new file mode 100644
index 00000000..bb653c4f
--- /dev/null
+++ b/test/e2e/ls.test.ts
@@ -0,0 +1,28 @@
+import { ResultCodes } from "../../src/cli/result-codes";
+import { buildProjectManifest } from "../common/data-project-manifest";
+import { runOpenupm } from "./run";
+import { prepareHomeDirectory } from "./setup/directories";
+import { prepareUnityProject } from "./setup/project";
+
+describe("list installed packages", () => {
+  test("should list installed packages", async () => {
+    const homeDirectory = await prepareHomeDirectory();
+    const projectDirectory = await prepareUnityProject(homeDirectory, {
+      manifest: buildProjectManifest((manifest) =>
+        manifest
+          .addDependency("dev.comradevanti.opt-unity", "2.0.0", true, true)
+          .addDependency("com.unity.ugui", "1.0.0", true, false)
+      ),
+    });
+
+    const result = await runOpenupm(projectDirectory, ["ls"]);
+
+    expect(result.code).toEqual(ResultCodes.Ok);
+    expect(result.stdErr).toEqual(
+      expect.arrayContaining([
+        "dev.comradevanti.opt-unity@2.0.0",
+        "com.unity.ugui@1.0.0",
+      ])
+    );
+  });
+});