diff --git a/.idea/modules.xml b/.idea/modules.xml
index 273a3f6ea6d7..a67289808009 100644
--- a/.idea/modules.xml
+++ b/.idea/modules.xml
@@ -1,3 +1,7 @@
+<!--
+     Modified by Dmitrij Pochepko at 2025 as part of the OpenIDE project (https://openide.ru).
+     Any modifications are available on the same license terms as the original source code.
+-->
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ProjectModuleManager">
@@ -1432,8 +1436,6 @@
       <module fileurl="file://$PROJECT_DIR$/plugins/search-everywhere-ml/typos/intellij.searchEverywhereMl.typos.iml" filepath="$PROJECT_DIR$/plugins/search-everywhere-ml/typos/intellij.searchEverywhereMl.typos.iml" />
       <module fileurl="file://$PROJECT_DIR$/plugins/settings-repository/intellij.settingsRepository.iml" filepath="$PROJECT_DIR$/plugins/settings-repository/intellij.settingsRepository.iml" />
       <module fileurl="file://$PROJECT_DIR$/plugins/settings-repository/intellij.settingsRepository.tests.iml" filepath="$PROJECT_DIR$/plugins/settings-repository/intellij.settingsRepository.tests.iml" />
-      <module fileurl="file://$PROJECT_DIR$/plugins/settings-sync/jba/intellij.settingsSync.iml" filepath="$PROJECT_DIR$/plugins/settings-sync/jba/intellij.settingsSync.iml" />
-      <module fileurl="file://$PROJECT_DIR$/platform/settings-sync-core/intellij.settingsSync.core.iml" filepath="$PROJECT_DIR$/platform/settings-sync-core/intellij.settingsSync.core.iml" />
       <module fileurl="file://$PROJECT_DIR$/plugins/sh/backend/intellij.sh.backend.iml" filepath="$PROJECT_DIR$/plugins/sh/backend/intellij.sh.backend.iml" />
       <module fileurl="file://$PROJECT_DIR$/plugins/sh/copyright/intellij.sh.copyright.iml" filepath="$PROJECT_DIR$/plugins/sh/copyright/intellij.sh.copyright.iml" />
       <module fileurl="file://$PROJECT_DIR$/plugins/sh/copyright/intellij.sh.copyright.tests.iml" filepath="$PROJECT_DIR$/plugins/sh/copyright/intellij.sh.copyright.tests.iml" />
diff --git a/community-resources/resources/META-INF/IdeaPlugin.xml b/community-resources/resources/META-INF/IdeaPlugin.xml
index 5945773aa5d4..4d2dd5253487 100644
--- a/community-resources/resources/META-INF/IdeaPlugin.xml
+++ b/community-resources/resources/META-INF/IdeaPlugin.xml
@@ -1,3 +1,7 @@
+<!--
+     Modified by Dmitrij Pochepko at 2025 as part of the OpenIDE project (https://openide.ru).
+     Any modifications are available on the same license terms as the original source code.
+-->
 <idea-plugin xmlns:xi="http://www.w3.org/2001/XInclude">
   <xi:include href="/META-INF/JavaIdePlugin.xml"/>
   <xi:include href="/ideTipsAndTricks.xml"/>
diff --git a/intellij.idea.community.main.iml b/intellij.idea.community.main.iml
index f28ed282f343..8b6900d14faf 100644
--- a/intellij.idea.community.main.iml
+++ b/intellij.idea.community.main.iml
@@ -1,3 +1,7 @@
+<!--
+     Modified by Dmitrij Pochepko at 2025 as part of the OpenIDE project (https://openide.ru).
+     Any modifications are available on the same license terms as the original source code.
+-->
 <?xml version="1.0" encoding="UTF-8"?>
 <module relativePaths="true" type="JAVA_MODULE" version="4">
   <component name="NewModuleRootManager" inherit-compiler-output="true">
diff --git a/platform/build-scripts/src/org/jetbrains/intellij/build/BaseIdeaProperties.kt b/platform/build-scripts/src/org/jetbrains/intellij/build/BaseIdeaProperties.kt
index 65205644c5b4..cc522a91f841 100644
--- a/platform/build-scripts/src/org/jetbrains/intellij/build/BaseIdeaProperties.kt
+++ b/platform/build-scripts/src/org/jetbrains/intellij/build/BaseIdeaProperties.kt
@@ -1,4 +1,8 @@
 // Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+// Modified by Dmitrij Pochepko at 2025 as part of the OpenIDE project (https://openide.ru).
+// Any modifications are available on the same license terms as the original source code.
+@file:Suppress("ReplaceJavaStaticMethodWithKotlinAnalog")
+
 package org.jetbrains.intellij.build
 
 import kotlinx.collections.immutable.PersistentList
diff --git a/platform/platform-impl/bootstrap/src/com/intellij/platform/ide/bootstrap/ApplicationLoader.kt b/platform/platform-impl/bootstrap/src/com/intellij/platform/ide/bootstrap/ApplicationLoader.kt
index 0c9d84c64296..ba74197fe051 100644
--- a/platform/platform-impl/bootstrap/src/com/intellij/platform/ide/bootstrap/ApplicationLoader.kt
+++ b/platform/platform-impl/bootstrap/src/com/intellij/platform/ide/bootstrap/ApplicationLoader.kt
@@ -1,4 +1,6 @@
-// Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+// Modified by Dmitrij Pochepko at 2025 as part of the OpenIDE project (https://openide.ru).
+// Any modifications are available on the same license terms as the original source code.
 @file:JvmName("ApplicationLoader")
 @file:Internal
 package com.intellij.platform.ide.bootstrap
@@ -252,7 +254,6 @@ internal suspend fun loadApp(
 @Suppress("ReplaceJavaStaticMethodWithKotlinAnalog", "CanConvertToMultiDollarString")
 private val asyncAppListenerAllowListForNonCorePlugin = java.util.Set.of(
   "com.jetbrains.rdserver.unattendedHost.logs.BackendMessagePoolExporter\$MyAppListener",
-  "com.intellij.settingsSync.SettingsSynchronizerApplicationInitializedListener",
   "com.intellij.dataspell.ide.impl.jupyter.JupyterDSProjectLifecycleListener",
   "com.jetbrains.gateway.GatewayBuildDateExpirationListener",
   "com.intellij.ide.misc.PluginAgreementUpdateScheduler",
diff --git a/platform/settings-sync-core/tests/com/intellij/settingsSync/core/SettingsProviderTest.kt b/platform/settings-sync-core/tests/com/intellij/settingsSync/core/SettingsProviderTest.kt
index 892debbc6427..d6a12084534b 100644
--- a/platform/settings-sync-core/tests/com/intellij/settingsSync/core/SettingsProviderTest.kt
+++ b/platform/settings-sync-core/tests/com/intellij/settingsSync/core/SettingsProviderTest.kt
@@ -1,3 +1,5 @@
+// Modified by Dmitrij Pochepko at 2025 as part of the OpenIDE project (https://openide.ru).
+// Any modifications are available on the same license terms as the original source code.
 package com.intellij.settingsSync.core
 
 import com.intellij.ide.GeneralSettings
@@ -22,7 +24,7 @@ internal class SettingsProviderTest : SettingsSyncRealIdeTestBase() {
     application.registerExtension(SettingsProvider.SETTINGS_PROVIDER_EP, settingsProvider, disposable)
   }
 
-  @Test
+//  @Test
   fun `settings from provider should be collected`() = timeoutRunBlockingAndStopBridge {
     val ideState = TestState("IDE value")
     settingsProvider.settings = ideState
@@ -47,7 +49,7 @@ internal class SettingsProviderTest : SettingsSyncRealIdeTestBase() {
     }
   }
 
-  @Test
+//  @Test
   fun `settings from provider changed on another client should be applied`() = timeoutRunBlockingAndStopBridge {
     val state = TestState("Server value")
     remoteCommunicator.prepareFileOnServer(settingsSnapshot {
@@ -63,7 +65,7 @@ internal class SettingsProviderTest : SettingsSyncRealIdeTestBase() {
     assertEquals("Server value", settingsProvider.settings!!.property, "Settings from server were not applied")
   }
 
-  @Test
+//  @Test
   fun `test merge settings provider settings`() = timeoutRunBlockingAndStopBridge {
     val serverState = TestState(property = "Server value")
     remoteCommunicator.prepareFileOnServer(settingsSnapshot {
diff --git a/platform/settings-sync-core/tests/com/intellij/settingsSync/core/SettingsSyncRealIdeTest.kt b/platform/settings-sync-core/tests/com/intellij/settingsSync/core/SettingsSyncRealIdeTest.kt
index 46a3e68f6601..455d6b459ab5 100644
--- a/platform/settings-sync-core/tests/com/intellij/settingsSync/core/SettingsSyncRealIdeTest.kt
+++ b/platform/settings-sync-core/tests/com/intellij/settingsSync/core/SettingsSyncRealIdeTest.kt
@@ -1,3 +1,5 @@
+// Modified by Dmitrij Pochepko at 2025 as part of the OpenIDE project (https://openide.ru).
+// Any modifications are available on the same license terms as the original source code.
 package com.intellij.settingsSync.core
 
 import com.intellij.configurationStore.getPerOsSettingsStorageFolderName
@@ -27,7 +29,7 @@ import kotlin.time.Duration.Companion.seconds
 
 internal class SettingsSyncRealIdeTest : SettingsSyncRealIdeTestBase() {
 
-  @Test
+//  @Test
   fun `settings are pushed`() = timeoutRunBlockingAndStopBridge {
     init(SettingsSyncSettings.getInstance())
     SettingsSyncSettings.getInstance().migrationFromOldStorageChecked = true
@@ -50,7 +52,7 @@ internal class SettingsSyncRealIdeTest : SettingsSyncRealIdeTestBase() {
     }
   }
 
-  @Test
+//  @Test
   fun `scheme changes are logged`() = timeoutRunBlockingAndStopBridge {
     initSettingsSync(SettingsSyncBridge.InitMode.JustInit)
 
@@ -96,7 +98,7 @@ internal class SettingsSyncRealIdeTest : SettingsSyncRealIdeTestBase() {
     return keymap
   }
 
-  @Test
+  //@Test
   fun `quickly modified settings are pushed together`() = timeoutRunBlockingAndStopBridge {
     initSettingsSync(SettingsSyncBridge.InitMode.JustInit)
 
@@ -123,7 +125,7 @@ internal class SettingsSyncRealIdeTest : SettingsSyncRealIdeTestBase() {
     }
   }
 
-  @Test
+//  @Test
   fun `existing settings are copied on initialization`() = timeoutRunBlockingAndStopBridge {
     initModifyAndSave(GeneralSettings.getInstance()) {
       autoSaveFiles = false
@@ -151,7 +153,7 @@ internal class SettingsSyncRealIdeTest : SettingsSyncRealIdeTestBase() {
     }
   }
 
-  @Test
+//  @Test
   fun `disabled categories should be ignored when copying settings on initialization`() = timeoutRunBlockingAndStopBridge {
     initModifyAndSave(GeneralSettings.getInstance()) {
       autoSaveFiles = false
@@ -186,7 +188,7 @@ internal class SettingsSyncRealIdeTest : SettingsSyncRealIdeTestBase() {
     }
   }
 
-  @Test
+//  @Test
   fun `settings from server are applied`() = timeoutRunBlockingAndStopBridge(5.seconds) {
     val generalSettings = init(GeneralSettings.getInstance())
     initSettingsSync(SettingsSyncBridge.InitMode.JustInit)
@@ -204,7 +206,7 @@ internal class SettingsSyncRealIdeTest : SettingsSyncRealIdeTestBase() {
     bridge.waitForAllExecuted()
   }
 
-  @Test
+//  @Test
   fun `enabling category should copy existing settings from that category`() = timeoutRunBlockingAndStopBridge {
     SettingsSyncSettings.getInstance().setCategoryEnabled(SettingsCategory.CODE, isEnabled = false)
     initModifyAndSave(GeneralSettings.getInstance()) {
@@ -244,7 +246,7 @@ internal class SettingsSyncRealIdeTest : SettingsSyncRealIdeTestBase() {
     }
   }
 
-  @Test
+//  @Test
   fun `not enabling cross IDE sync initially works as expected`() = timeoutRunBlockingAndStopBridge {
     init(SettingsSyncSettings.getInstance())
     initModifyAndSave(GeneralSettings.getInstance()) { autoSaveFiles = false }
@@ -265,7 +267,7 @@ internal class SettingsSyncRealIdeTest : SettingsSyncRealIdeTestBase() {
     }
   }
 
-  @Test
+//  @Test
   fun `enabling cross IDE sync initially works as expected`() = timeoutRunBlockingAndStopBridge {
     init(SettingsSyncSettings.getInstance())
     initModifyAndSave(GeneralSettings.getInstance()) { autoSaveFiles = false }
@@ -286,7 +288,7 @@ internal class SettingsSyncRealIdeTest : SettingsSyncRealIdeTestBase() {
     }
   }
 
-  @Test
+//  @Test
   fun `sync settings are always uploaded even if system settings are disabled`() = timeoutRunBlockingAndStopBridge {
     init(SettingsSyncSettings.getInstance())
     initModifyAndSave(GeneralSettings.getInstance()) { autoSaveFiles = false }
@@ -303,19 +305,19 @@ internal class SettingsSyncRealIdeTest : SettingsSyncRealIdeTestBase() {
     }
   }
 
-  @Test
+//  @Test
   fun `exportable non-roamable settings should not be synced`() = timeoutRunBlockingAndStopBridge {
     testVariousComponentsShouldBeSyncedOrNot(ExportableNonRoamable(), expectedToBeSynced = false)
   }
 
-  @Test
+//  @Test
   fun `roamable settings should be synced`() = timeoutRunBlockingAndStopBridge {
     testVariousComponentsShouldBeSyncedOrNot(Roamable(), expectedToBeSynced = true)
   }
 
 
-  @Test
-  @TestFor(issues = ["IJPL-162877"])
+//  @Test
+//  @TestFor(issues = ["IJPL-162877"])
   fun `don't sync non-roamable files`() = timeoutRunBlockingAndStopBridge {
     val nonRoamable = ExportableNonRoamable()
 
@@ -376,7 +378,7 @@ internal class SettingsSyncRealIdeTest : SettingsSyncRealIdeTestBase() {
     }
   }
 
-  @Test
+//  @Test
   fun `local and remote changes in different files are both applied`() = timeoutRunBlockingAndStopBridge {
     val generalSettings = init(GeneralSettings.getInstance())
     initSettingsSync(SettingsSyncBridge.InitMode.JustInit)
diff --git a/python/ide-common/resources/META-INF/PyCharmCorePlugin.xml b/python/ide-common/resources/META-INF/PyCharmCorePlugin.xml
index f53d738142b5..1c61c3675f92 100644
--- a/python/ide-common/resources/META-INF/PyCharmCorePlugin.xml
+++ b/python/ide-common/resources/META-INF/PyCharmCorePlugin.xml
@@ -1,4 +1,7 @@
-<!-- Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
+<!-- Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+     Modified by Dmitrij Pochepko at 2025 as part of the OpenIDE project (https://openide.ru).
+     Any modifications are available on the same license terms as the original source code.
+-->
 <idea-plugin xmlns:xi="http://www.w3.org/2001/XInclude">
   <module value="com.intellij.modules.pycharm.community"/>
   <module value="com.intellij.modules.python-core-capable"/>