Update README.md

README.md

@@ -643,6 +643,7 @@ See [go-hardware](https://github.com/rakyll/go-hardware) for a comprehensive lis
 * [grab](https://github.com/cavaliercoder/grab) - Go package for managing file downloads
 * [graval](https://github.com/koofr/graval) - An experimental FTP server framework.
 * [kcp-go](https://github.com/xtaci/kcp-go) - KCP - A Fast and Reliable ARQ Protocol.
+* [kcptun](https://github.com/xtaci/kcptun) - An extremely simple & fast udp tunnel based on KCP protocol
 * [linkio](https://github.com/ian-kent/linkio) - Network link speed simulation for Reader/Writer interfaces
 * [llb](https://github.com/kirillDanshin/llb) - It's a very simple but quick backend for proxy servers. Can be useful for fast redirection to predefined domain with zero memory allocation and fast response.
 * [mdns](https://github.com/hashicorp/mdns) - Simple mDNS (Multicast DNS) client/server library in Golang