diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
index fe2cb4e..eb651f1 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/gradle.yml
@@ -23,6 +23,8 @@ jobs:
           java-version: 17
       - name: Build (Forge)
         run: ./gradlew build
+      - name: Build (NeoForge)
+        run: ./gradlew --build-file build-neoforge.gradle build
       - name: Build (Fabric)
         run: ./gradlew --build-file build-fabric.gradle build
       - uses: actions/upload-artifact@v2
diff --git a/.gitignore b/.gitignore
index 12f8644..dbe1884 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,6 +20,9 @@ build
 # other
 eclipse
 run
+# Neoforge
+runs
 
 # Files from Forge MDK
 forge*changelog.txt
+.DS_Store
diff --git a/build-fabric.gradle b/build-fabric.gradle
index 6904e14..29e2db6 100644
--- a/build-fabric.gradle
+++ b/build-fabric.gradle
@@ -20,6 +20,7 @@ sourceSets {
     main {
         java {
             exclude 'yalter/mousetweaks/forge'
+            exclude 'yalter/mousetweaks/neoforge'
         }
 
         resources {
diff --git a/build-neoforge.gradle b/build-neoforge.gradle
new file mode 100644
index 0000000..c221400
--- /dev/null
+++ b/build-neoforge.gradle
@@ -0,0 +1,90 @@
+plugins {
+    id 'java-library'
+    id 'eclipse'
+    id 'idea'
+    id 'maven-publish'
+    id 'net.neoforged.gradle.userdev' version '7.0.80'
+}
+
+def minecraftVersion = "1.20.4" // Used for output JAR filenames.
+
+version = project.mod_version
+group = "yalter.mousetweaks"
+
+base {
+    archivesName = "MouseTweaks-neoforge-mc${minecraftVersion}"
+}
+
+java.toolchain.languageVersion = JavaLanguageVersion.of(17)
+
+sourceSets {
+    main {
+        java {
+            exclude 'yalter/mousetweaks/fabric'
+            exclude 'yalter/mousetweaks/ModMenuApiImpl.java'
+            exclude 'yalter/mousetweaks/forge'
+        }
+
+        resources {
+            exclude 'fabric.mod.json'
+            exclude 'META-INF/mods-neo.toml'
+        }
+    }
+}
+
+tasks.register("fixModsToml", Copy) {
+    // Copy the mods-neo.toml file to mods.toml
+    from "src/main/resources/META-INF"
+    include "mods-neo.toml"
+    rename "mods-neo.toml", "mods.toml"
+    into "src/main/resources/META-INF"
+}
+
+// Make the fixModsToml task run before the processResources task
+processResources.dependsOn(fixModsToml)
+
+processResources {
+    inputs.property "version", project.mod_version
+    filesMatching("META-INF/mods.toml") {
+        expand "version": project.mod_version
+    }
+}
+
+runs {
+    configureEach {
+        systemProperty 'forge.logging.markers', 'REGISTRIES'
+        systemProperty 'forge.logging.console.level', 'debug'
+
+        modSource project.sourceSets.main
+    }
+
+    client {
+        systemProperty 'forge.enabledGameTestNamespaces', "mousetweaks"
+    }
+
+    server {
+        systemProperty 'forge.enabledGameTestNamespaces', "mousetweaks"
+        programArgument '--nogui'
+    }
+}
+
+dependencies {
+    implementation "net.neoforged:neoforge:20.4.190"
+}
+
+task srcJar(type: Jar) {
+    archiveClassifier.set("src")
+    from sourceSets.main.allJava
+}
+
+task apiJar(type: Jar) {
+    archiveClassifier.set("api")
+    from(sourceSets.main.output) {
+        include 'yalter/mousetweaks/api/**'
+    }
+}
+
+artifacts {
+    archives srcJar
+    archives apiJar
+}
diff --git a/build.gradle b/build.gradle
index 5072d8b..3950f12 100644
--- a/build.gradle
+++ b/build.gradle
@@ -24,10 +24,12 @@ sourceSets {
         java {
             exclude 'yalter/mousetweaks/fabric'
             exclude 'yalter/mousetweaks/ModMenuApiImpl.java'
+            exclude 'yalter/mousetweaks/neoforge'
         }
 
         resources {
             exclude 'fabric.mod.json'
+            exclude 'META-INF/mods-neo.toml'
         }
     }
 }
diff --git a/settings.gradle b/settings.gradle
index a8ef30d..89921ff 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -7,5 +7,6 @@ pluginManagement {
         mavenCentral()
         gradlePluginPortal()
         maven { url = 'https://maven.minecraftforge.net/' }
+        maven { url = 'https://maven.neoforged.net/releases' }
     }
-}
\ No newline at end of file
+}
diff --git a/src/main/java/yalter/mousetweaks/neoforge/ClientHelper.java b/src/main/java/yalter/mousetweaks/neoforge/ClientHelper.java
new file mode 100644
index 0000000..7229adb
--- /dev/null
+++ b/src/main/java/yalter/mousetweaks/neoforge/ClientHelper.java
@@ -0,0 +1,14 @@
+package yalter.mousetweaks.neoforge;
+
+import net.neoforged.neoforge.client.ConfigScreenHandler;
+import yalter.mousetweaks.ConfigScreen;
+
+/**
+ * Functions accessing client-only classes, extracted so that they can be called from MouseTweaksNeo
+ * without causing class-loading errors on the server.
+ */
+public class ClientHelper {
+    public static ConfigScreenHandler.ConfigScreenFactory createConfigScreenFactory() {
+        return new ConfigScreenHandler.ConfigScreenFactory((minecraft, screen) -> new ConfigScreen(screen));
+    }
+}
diff --git a/src/main/java/yalter/mousetweaks/neoforge/MouseTweaksNeo.java b/src/main/java/yalter/mousetweaks/neoforge/MouseTweaksNeo.java
new file mode 100644
index 0000000..0c04180
--- /dev/null
+++ b/src/main/java/yalter/mousetweaks/neoforge/MouseTweaksNeo.java
@@ -0,0 +1,79 @@
+package yalter.mousetweaks.neoforge;
+
+import net.neoforged.neoforge.client.ConfigScreenHandler;
+import net.neoforged.neoforge.client.event.ScreenEvent.MouseButtonPressed;
+import net.neoforged.neoforge.client.event.ScreenEvent.MouseButtonReleased;
+import net.neoforged.neoforge.client.event.ScreenEvent.MouseDragged;
+import net.neoforged.neoforge.client.event.ScreenEvent.MouseScrolled;
+import net.neoforged.neoforge.common.NeoForge;
+import net.neoforged.bus.api.SubscribeEvent;
+import net.neoforged.fml.IExtensionPoint;
+import net.neoforged.fml.ModLoadingContext;
+import net.neoforged.fml.loading.FMLEnvironment;
+import net.neoforged.fml.common.Mod;
+import yalter.mousetweaks.Constants;
+import yalter.mousetweaks.Logger;
+import yalter.mousetweaks.Main;
+import yalter.mousetweaks.MouseButton;
+
+@Mod(Constants.MOD_ID)
+public class MouseTweaksNeo {
+    public MouseTweaksNeo() {
+        ModLoadingContext.get().registerExtensionPoint(IExtensionPoint.DisplayTest.class, () -> new IExtensionPoint.DisplayTest(() -> "ANY", (remote, isServer) -> true));
+        if (FMLEnvironment.dist != net.neoforged.api.distmarker.Dist.CLIENT) {
+            Logger.Log("Disabled because not running on the client.");
+            return;
+        }
+
+        Main.initialize();
+        NeoForge.EVENT_BUS.register(this);
+
+        ModLoadingContext.get().registerExtensionPoint(ConfigScreenHandler.ConfigScreenFactory.class, ClientHelper::createConfigScreenFactory);
+    }
+
+    @SubscribeEvent
+    public void onGuiMouseClickedPre(MouseButtonPressed.Pre event) {
+        Logger.DebugLog("onGuiMouseClickedPre button = " + event.getButton());
+
+        MouseButton button = MouseButton.fromEventButton(event.getButton());
+        if (button != null) {
+            if (Main.onMouseClicked(event.getScreen(), event.getMouseX(), event.getMouseY(), button))
+                event.setCanceled(true);
+        }
+    }
+
+    @SubscribeEvent
+    public void onGuiMouseReleasedPre(MouseButtonReleased.Pre event) {
+        Logger.DebugLog("onGuiMouseReleasedPre button = " + event.getButton());
+
+        MouseButton button = MouseButton.fromEventButton(event.getButton());
+        if (button != null) {
+            if (Main.onMouseReleased(event.getScreen(), event.getMouseX(), event.getMouseY(), button))
+                event.setCanceled(true);
+        }
+    }
+
+    @SubscribeEvent
+    public void onGuiMouseScrollPost(MouseScrolled.Post event) {
+        // Sent when nothing handled the scroll itself. For example, the creative inventory handles scroll anywhere on
+        // screen, so this event is suppressed. Quick scrolls at limited FPS result in multiple scroll events rather
+        // than one with a bigger delta.
+        Logger.DebugLog("onGuiMouseScrollPost delta = " + event.getScrollDeltaY());
+
+        // Post events aren't cancellable, but that's okay.
+        Main.onMouseScrolled(event.getScreen(), event.getMouseX(), event.getMouseY(), event.getScrollDeltaY());
+    }
+
+    @SubscribeEvent
+    public void onGuiMouseDragPre(MouseDragged.Pre event) {
+        // Sent when a mouse is dragged while a mouse button is down (so between Clicked and Released events). The
+        // rate of reporting is high even when the FPS is limited through the options.
+        Logger.DebugLog("onGuiMouseDragPre button = " + event.getMouseButton() + ", dx = " + event.getDragX() + ", dy = " + event.getDragY());
+
+        MouseButton button = MouseButton.fromEventButton(event.getMouseButton());
+        if (button != null) {
+            if (Main.onMouseDrag(event.getScreen(), event.getMouseX(), event.getMouseY(), button))
+                event.setCanceled(true);
+        }
+    }
+}
diff --git a/src/main/resources/META-INF/mods-neo.toml b/src/main/resources/META-INF/mods-neo.toml
new file mode 100644
index 0000000..354d1b5
--- /dev/null
+++ b/src/main/resources/META-INF/mods-neo.toml
@@ -0,0 +1,19 @@
+modLoader="javafml"
+loaderVersion="[2,)"
+license="BSD-3-Clause"
+issueTrackerURL="https://github.com/YaLTeR/MouseTweaks/issues"
+
+[[mods]]
+modId="mousetweaks"
+version="${version}"
+displayName="Mouse Tweaks"
+displayURL="https://minecraft.curseforge.com/projects/mouse-tweaks"
+logoFile="mousetweaks_logo.png"
+credits="Contributors: mezz, juliand665, panoskj, FabiClawZ."
+authors="Ivan Molodetskikh (YaLTeR)"
+description='''
+A mod that enhances the inventory management by adding various additional functions to the usual mouse buttons.
+'''
+
+[[mixins]]
+config="mousetweaks.mixins.json"