diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index c6277e599e..18e2ca7307 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -49,6 +49,7 @@ groovy = "3.0.9"
 jUnit = "4.13.2"
 java-diff-utils = "4.12"
 javaParser = "3.24.0"
+jetbrains-compose-plugin = "1.7.3"
 kgx = "0.1.12"
 kotest = "5.1.0"
 # Keep this in sync with what is hard-coded in build-logic/settings.gradle.kts as that is upstream
@@ -106,6 +107,8 @@ ktlint = { id = "com.rickbusarow.ktlint", version.ref = "ktlint-gradle" }
 kotlinx-apiBinaryCompatibility = { id = "org.jetbrains.kotlinx.binary-compatibility-validator", version.ref = "kotlinx-binary-compatibility" }
 mavenPublish = { id = "com.vanniktech.maven.publish", version.ref = "vanniktech-publish" }
 
+jetbrains-compose = { id = "org.jetbrains.compose", version.ref = "jetbrains-compose-plugin" }
+
 [libraries]
 
 android-gradle-plugin = { module = "com.android.tools.build:gradle", version.ref = "agpVersion" }
@@ -212,6 +215,7 @@ kotlinx-binaryCompatibility-gradle-plugin = { module = "org.jetbrains.kotlinx:bi
 kotlinx-coroutines-android = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-android", version.ref = "kotlinx-coroutines" }
 kotlinx-coroutines-core = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version.ref = "kotlinx-coroutines" }
 kotlinx-coroutines-rx2 = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-rx2", version.ref = "kotlinx-coroutines" }
+kotlinx-coroutines-swing = { group = "org.jetbrains.kotlinx", name = "kotlinx-coroutines-swing", version.ref = "kotlinx-coroutines" }
 kotlinx-coroutines-test = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-test", version.ref = "kotlinx-coroutines" }
 kotlinx-coroutines-test-common = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-test", version.ref = "kotlinx-coroutines" }
 kotlinx-serialization-json = { module = "org.jetbrains.kotlinx:kotlinx-serialization-json", version.ref = "kotlinx-serialization-json" }
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 0cc8d2b263..f4982b30f7 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -67,6 +67,7 @@ include(
   ":workflow-rx2",
   ":workflow-testing",
   ":workflow-tracing",
+  ":workflow-trace-viewer",
   ":workflow-ui:compose",
   ":workflow-ui:compose-tooling",
   ":workflow-ui:core-common",
diff --git a/workflow-trace-viewer/README.md b/workflow-trace-viewer/README.md
new file mode 100644
index 0000000000..98b5e424ca
--- /dev/null
+++ b/workflow-trace-viewer/README.md
@@ -0,0 +1,11 @@
+# Workflow Trace Viewer
+
+A Compose for Desktop app that can be used to view Workflow traces.
+
+## Running
+
+It can be run via Gradle using:
+
+```shell
+./gradlew :workflow-trace-viewer:run
+```
diff --git a/workflow-trace-viewer/api/workflow-trace-viewer.api b/workflow-trace-viewer/api/workflow-trace-viewer.api
new file mode 100644
index 0000000000..099f7096aa
--- /dev/null
+++ b/workflow-trace-viewer/api/workflow-trace-viewer.api
@@ -0,0 +1,15 @@
+public final class com/squareup/workflow1/traceviewer/AppKt {
+	public static final fun App (Landroidx/compose/runtime/Composer;I)V
+}
+
+public final class com/squareup/workflow1/traceviewer/ComposableSingletons$MainKt {
+	public static final field INSTANCE Lcom/squareup/workflow1/traceviewer/ComposableSingletons$MainKt;
+	public fun <init> ()V
+	public final fun getLambda$468449326$wf1_workflow_trace_viewer ()Lkotlin/jvm/functions/Function3;
+}
+
+public final class com/squareup/workflow1/traceviewer/MainKt {
+	public static final fun main ()V
+	public static synthetic fun main ([Ljava/lang/String;)V
+}
+
diff --git a/workflow-trace-viewer/build.gradle.kts b/workflow-trace-viewer/build.gradle.kts
new file mode 100644
index 0000000000..61e4fb13df
--- /dev/null
+++ b/workflow-trace-viewer/build.gradle.kts
@@ -0,0 +1,50 @@
+import org.jetbrains.compose.desktop.application.dsl.TargetFormat
+
+plugins {
+  id("kotlin-multiplatform")
+  alias(libs.plugins.jetbrains.compose)
+  alias(libs.plugins.compose.compiler)
+}
+
+kotlin {
+  jvm()
+
+  sourceSets {
+    jvmMain {
+      dependencies {
+        implementation(compose.runtime)
+        implementation(compose.foundation)
+        implementation(compose.material)
+        implementation(compose.ui)
+        implementation(compose.components.resources)
+        implementation(compose.components.uiToolingPreview)
+        implementation(libs.androidx.lifecycle.viewmodel.core)
+        implementation(libs.androidx.lifecycle.compose)
+        implementation(compose.desktop.currentOs)
+        implementation(libs.kotlinx.coroutines.swing)
+        implementation(compose.materialIconsExtended)
+      }
+    }
+  }
+}
+
+compose {
+  desktop {
+    application {
+      mainClass = "com.squareup.workflow1.traceviewer.MainKt"
+      jvmArgs(
+        "-Dapple.awt.application.appearance=system",
+      )
+
+      nativeDistributions {
+        includeAllModules = true
+        targetFormats(TargetFormat.Dmg)
+        packageName = "Workflow Trace Viewer"
+        packageVersion = "1.0.0"
+        macOS {
+          bundleID = "com.squareup.workflow1.traceviewer"
+        }
+      }
+    }
+  }
+}
diff --git a/workflow-trace-viewer/src/jvmMain/kotlin/com/squareup/workflow1/traceviewer/App.kt b/workflow-trace-viewer/src/jvmMain/kotlin/com/squareup/workflow1/traceviewer/App.kt
new file mode 100644
index 0000000000..8a82d46090
--- /dev/null
+++ b/workflow-trace-viewer/src/jvmMain/kotlin/com/squareup/workflow1/traceviewer/App.kt
@@ -0,0 +1,9 @@
+package com.squareup.workflow1.traceviewer
+
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+
+@Composable
+fun App() {
+  Text("Hello world!")
+}
diff --git a/workflow-trace-viewer/src/jvmMain/kotlin/com/squareup/workflow1/traceviewer/Main.kt b/workflow-trace-viewer/src/jvmMain/kotlin/com/squareup/workflow1/traceviewer/Main.kt
new file mode 100644
index 0000000000..63ebd1cc3b
--- /dev/null
+++ b/workflow-trace-viewer/src/jvmMain/kotlin/com/squareup/workflow1/traceviewer/Main.kt
@@ -0,0 +1,9 @@
+package com.squareup.workflow1.traceviewer
+
+import androidx.compose.ui.window.singleWindowApplication
+
+fun main() {
+  singleWindowApplication(title = "Workflow Trace Viewer") {
+    App()
+  }
+}