add Yjs-compatible ports to documentation

README.md

@@ -66,6 +66,7 @@ on Yjs. [![Become a Sponsor](https://img.shields.io/static/v1?label=Become%20a%2
 * [Overview](#Overview)
   * [Bindings](#Bindings)
   * [Providers](#Providers)
+  * [Ports](#Ports)
 * [Getting Started](#Getting-Started)
 * [API](#API)
   * [Shared Types](#Shared-Types)
@@ -153,6 +154,22 @@ y-websocket provider.
 </dd>
 </dl>
 
+# Ports
+
+There are several Yjs-compatible ports to other programming languages.
+
+* [y-octo](https://github.com/toeverything/y-octo) - Rust implementation by
+Affine
+* [y-crdt](https://github.com/y-crdt/y-crdt) - Rust implementation with multiple
+language bindings to other languages
+  * [yrs](https://github.com/y-crdt/y-crdt/tree/main/yrs) - Rust interface
+  * [ypy](https://github.com/y-crdt/ypy) - Python binding
+  * [yrb](https://github.com/y-crdt/yrb) - Ruby binding
+  * [yrb](https://github.com/y-crdt/yswift) - Swift binding
+  * [yffi](https://github.com/y-crdt/y-crdt/tree/main/yffi) - C-FFI
+  * [ywasm](https://github.com/y-crdt/y-crdt/tree/main/ywasm) - WASM binding
+* [ycs](https://github.com/yjs/ycs) - .Net compatible C# implementation.
+
 ## Getting Started
 
 Install Yjs and a provider with your favorite package manager: