Way back in the 1980s and early 1990s, before the internet reigned supreme, many PC owners dialed up Bulletin Board Systems (BBSes), which were other PCs running special software that allowed users to connect and share messages, play games, or download files.
While few BBSes remain today compared to their height in the early-mid 1990s, one can still connect to a BBS using the internet. Thanks to the antique text-only protocol called telnet, you can use a terminal emulator program to start BBSing just like the glory days.
read more: https://www.pcmag.com/feature/358037/7-modern-bbses-worth-calling-today