Reticulum is peer to peer via any method, including the internet, it’s more a protocol than a meshnet. Has text based websites too btw. Mostly chat apps and forums, as well as some blogs and libraries. It’s pretty neat, but takes a little setting up and is fairly niche right now. Feels like the original internet culture, people building things just because they can and building communities also.

Meshtastic is definitely also not too slow and is pure LoRa, it’s just a bit lossy and has range issues in busy networks. You can do voice chat over it if you have strong enough links.

You’ll have a lot more fun setting up a reticulum or meshtastic node if you’re in a busy enough area. Radio and internet based meshnet with chat.

Mastodon is a social media app, a bit like Twitter, but instead of one company owning the whole thing, it is made of lots of smaller communities that can talk to each other. You join one community, but you can still follow and talk to people on other communities, a bit like how someone with a Gmail address can email someone with an Outlook address.