Don't make a clone. Make something better. There's a thread here about some of the current discord alternatives...

Gamedev Mastodon

Marc (@mdiluz@mastodon.gamedev.place)

Time for a #discord alternatives thread, for no particular reason. I've actually been looking into all available options for the past few weeks fo...

and he also links to this for an alternative take on the state of play...

Discord Alternatives, Ranked

Building an online community takes more than tools. But the right tool can make all the difference.