added GUI frontend links

README.md

@@ -294,6 +294,5 @@ Treat other people with helpfulness, gratitude, and consideration! See the [Pyth
 
 #### See also
 * [youtube-python](https://github.com/rohitkhatri/youtube-python) - client for the YouTube data API
-* [youtube-dl](https://github.com/ytdl-org/youtube-dl) - command line downloader with sophisticated options
-* [youtube-dl-gui](https://github.com/MrS0m30n3/youtube-dl-gui) - wxPython GUI frontend for youtube-dl
-* [youtube-dl-server](https://github.com/manbearwiz/youtube-dl-server) - web frontend for youtube-dl
+* [YouTubeDownload](https://github.com/hbmartin/YouTubeDownload) - GUI frontend for pytube3
+* [Pytube-GUI](https://github.com/GAO23/Pytube-GUI) - Simple GUI frontend for pytube3