Matrix has spaces, which are collections of rooms.

There’s also XMPP. It’s not quite the same as discord, but it’s another federated chat protocol.

It’s not federated, but revolt.chat is probably the closest open source discord alternative.

Pixelfed has more than 100,000 active users, about 5 times what it was 6 months ago, so I wouldn’t really call it dead. And with the fediverse, pixelfed and mastodon can talk to each other, so even on less active platforms you can connect with millions of other people. Most of the accounts I follow on pixelfed are from mastodon.

There’s pinetta that’s inspired by pinterest, but the repo hasn’t been updated in a couple years.

Fascist ideas don’t spread because they make good points. They spread because they get repeated so much. People who don’t know any better believe it because they’ve heard it so many times, or from someone they trust. Federating with fascists gives them more people to spread their ideas to.

Talking to conservatives can definitely help, but it really depends on the context. Just having people who they disagree with in their lives can can be helpful. If you’re someone they trust you might get them to work through some things. Or if you know a topic really well and know what talking points they’re likely to bring up. But it’s nearly impossible to get though to people who already hate you.

Everyone is at a different place with what they want to handle. Some people just want a small friendly community where they have a chance to relax. Others want a more open communities that only keep out the worst. And some are okay with putting up with harassment to reach more people. But generally we shouldn’t force others to put up with that harassment along with us.

I generally prefer to federate with as many communities as possible, but federating with fascists is a terrible idea. You’re just making people in your community vulnerable to harassment.

People are self organizing onto these instances, and if they don’t like their current one it’s not hard to move. Most people won’t move to one that allows nazis in.

There’s also clauses about revoking your license if you try to sue them, and how you need to still include the system to pay them in your modified version.

I’m pretty sure most screen readers and stuff like copy/paste would also get whatever nonsense you filled it with.

A lot of the ways they scrape documents are the same used by accessibility tools, so I’d generally recommend against doing this.

They’ve done federation on a few test posts, but it’s definitely not there yet for normal users to use.

I’m not sure about a bridge, but there’s some services like friendica and hubzilla that can speak both protocols.

Liberapay is centralized but it is open source.

There’s hundreds of other contributers, but he started them all and did the bulk of the work. The plan is to have more regular developers if they get enough donations.

Vidzy and the loops server code are available under AGPL. The loops app isn’t open source yet, but has to be eventually as part of the NLnet grant agreement.