Just found this place and wanted to introduce myself. I run a variety of retro websites, such as https://macos.retro-os.live which has more than 15k downloads and also run over 50 Hotline servers. All with no ads or tracking.
Go to https://hotline.retro-os.live/index.php/downloads/category/9-hotline-clients to download a client for your operating system of choice. Hotline let's you download, upload, post news and chat with other members.
If you have any questions just let me know!