diff --git a/common/build.gradle b/common/build.gradle
new file mode 100644
index 00000000000..9597bd30a20
--- /dev/null
+++ b/common/build.gradle
@@ -0,0 +1,6 @@
+plugins {
+    id "org.jetbrains.kotlin.multiplatform"
+    id "org.jetbrains.kotlin.plugin.serialization"
+}
+
+apply from: "$mppProjectWithSerializationPresetPath"
diff --git a/common/src/commonMain/kotlin/dev/inmo/micro_utils/common/DiffUtils.kt b/common/src/commonMain/kotlin/dev/inmo/micro_utils/common/DiffUtils.kt
new file mode 100644
index 00000000000..92e0dca214d
--- /dev/null
+++ b/common/src/commonMain/kotlin/dev/inmo/micro_utils/common/DiffUtils.kt
@@ -0,0 +1,10 @@
+package dev.inmo.micro_utils.common
+
+fun <T> Iterable<T>.syncWith(
+    other: Iterable<T>,
+    removed: (List<T>) -> Unit = {},
+    added: (List<T>) -> Unit = {}
+) {
+    removed(filter { it !in other })
+    added(other.filter { it !in this })
+}
diff --git a/common/src/commonMain/kotlin/dev/inmo/micro_utils/common/InputAllocator.kt b/common/src/commonMain/kotlin/dev/inmo/micro_utils/common/InputAllocator.kt
new file mode 100644
index 00000000000..2fd48505694
--- /dev/null
+++ b/common/src/commonMain/kotlin/dev/inmo/micro_utils/common/InputAllocator.kt
@@ -0,0 +1,27 @@
+package dev.inmo.micro_utils.common
+
+import kotlinx.serialization.KSerializer
+import kotlinx.serialization.builtins.ByteArraySerializer
+import kotlinx.serialization.descriptors.SerialDescriptor
+import kotlinx.serialization.encoding.Decoder
+import kotlinx.serialization.encoding.Encoder
+
+typealias ByteArrayAllocator = () -> ByteArray
+
+val ByteArray.asAllocator: ByteArrayAllocator
+    get() = { this }
+
+object ByteArrayAllocatorSerializer : KSerializer<ByteArrayAllocator> {
+    private val realSerializer = ByteArraySerializer()
+    override val descriptor: SerialDescriptor = realSerializer.descriptor
+
+    override fun deserialize(decoder: Decoder): ByteArrayAllocator {
+        val bytes = realSerializer.deserialize(decoder)
+        return { bytes }
+    }
+
+    override fun serialize(encoder: Encoder, value: ByteArrayAllocator) {
+        realSerializer.serialize(encoder, value())
+    }
+}
+
diff --git a/coroutines/src/commonMain/kotlin/dev/inmo/micro_utils/coroutines/BroadcastStateFlow.kt b/coroutines/src/commonMain/kotlin/dev/inmo/micro_utils/coroutines/BroadcastStateFlow.kt
new file mode 100644
index 00000000000..f8d54aab376
--- /dev/null
+++ b/coroutines/src/commonMain/kotlin/dev/inmo/micro_utils/coroutines/BroadcastStateFlow.kt
@@ -0,0 +1,33 @@
+package dev.inmo.micro_utils.coroutines
+
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.channels.BroadcastChannel
+import kotlinx.coroutines.channels.Channel
+import kotlinx.coroutines.flow.*
+
+class BroadcastStateFlow<T> internal constructor(
+    parentFlow: Flow<T>,
+    private val stateGetter: () -> T
+) : StateFlow<T>, Flow<T> by parentFlow {
+    override val value: T
+        get() = stateGetter()
+}
+
+fun <T> BroadcastChannel<T>.asStateFlow(value: T, scope: CoroutineScope): StateFlow<T> = asFlow().let {
+    var state: T = value
+    it.onEach { state = it }.launchIn(scope)
+    BroadcastStateFlow(it) {
+        state
+    }
+}
+
+fun <T> BroadcastChannel<T?>.asStateFlow(scope: CoroutineScope): StateFlow<T?> = asStateFlow(null, scope)
+
+fun <T> broadcastStateFlow(initial: T, scope: CoroutineScope, channelSize: Int = Channel.BUFFERED) = BroadcastChannel<T>(
+    channelSize
+).let {
+    it to it.asStateFlow(initial, scope)
+}
+
+fun <T> broadcastStateFlow(scope: CoroutineScope, channelSize: Int = Channel.BUFFERED) = broadcastStateFlow<T?>(null, scope, channelSize)
+
diff --git a/coroutines/src/commonMain/kotlin/dev/inmo/micro_utils/coroutines/DataAsDeferred.kt b/coroutines/src/commonMain/kotlin/dev/inmo/micro_utils/coroutines/DataAsDeferred.kt
new file mode 100644
index 00000000000..e196df51555
--- /dev/null
+++ b/coroutines/src/commonMain/kotlin/dev/inmo/micro_utils/coroutines/DataAsDeferred.kt
@@ -0,0 +1,7 @@
+package dev.inmo.micro_utils.coroutines
+
+import kotlinx.coroutines.CompletableDeferred
+import kotlinx.coroutines.Deferred
+
+val <T> T.asDeferred: Deferred<T>
+    get() = CompletableDeferred(this)
diff --git a/settings.gradle b/settings.gradle
index c7baba74fd2..9acb121ff06 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1,6 +1,7 @@
 rootProject.name='micro_utils'
 
 String[] includes = [
+    ":common",
     ":pagination:common",
     ":pagination:exposed",
     ":pagination:ktor:common",