diff --git a/README.md b/README.md
index 88220e9..0b22305 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@ Angular extensions powered by community.
   + [Change Detection Scheduler][ChangeDetectionScheduler]
   + [IterableDiffers Extensibility][IterableDiffersExtensibility]
   + [KeyValueDiffers Extensibility][KeyValueDiffersExtensibility]
+  + [`FastIterableDiffer`][FastIterableDiffer]
 + `@angular-contrib/common`
   + [`<ng-host>`][NgHost]
   + [`ngForIn`][NgForIn]
@@ -65,6 +66,7 @@ class AppComponent { }
 
 
 [ChangeDetectionScheduler]: https://github.com/trotyl/angular-contrib/tree/master/packages/core/change-detection-scheduler
+[FastIterableDiffer]: https://github.com/trotyl/angular-contrib/tree/master/packages/core/fast-iterable-differ
 [IterableDiffersExtensibility]: https://github.com/trotyl/angular-contrib/tree/master/packages/core/iterable-differs
 [KeyValueDiffersExtensibility]: https://github.com/trotyl/angular-contrib/tree/master/packages/core/key-value-differs
 [NgForIn]: https://github.com/trotyl/angular-contrib/tree/master/packages/common/for-in
diff --git a/packages/core/fast-iterable-differ/README.md b/packages/core/fast-iterable-differ/README.md
new file mode 100644
index 0000000..92de1de
--- /dev/null
+++ b/packages/core/fast-iterable-differ/README.md
@@ -0,0 +1,34 @@
+# FastIterableDiffer
+
+An optimized `IterableDiffer` inspired by [Inferno](https://github.com/infernojs/inferno).
+
+## Type
+
+**Provider**
+
+## Provenance
+
++ https://github.com/angular/angular/issues/18178
+
+## NgModule
+
+`@angular-contrib/core#FastIterableDifferModule`
+
+## Usage
+
+```typescript
+@NgModule({
+  imports: [ FastIterableDifferModule ],
+})
+class MyModule { }
+```
+
+## Note
+
++ Non-keyed by default, please provide `trackBy` when expecting keyed behavior;
++ Duplicate keys are not allowed;
++ The operations detected will be different, but the result is same;
+
+## Requirements
+
++ Map;