@fitheach It's hard to count. Matrix has more public group communication ("rooms"), while XMPP is more used for private chat, esp. one-to-one. The latter is hard to count.
@fitheach well to be fair, the xmpp community hasn't provided a parser to scrape xmpp servers. Not intended to make xmpp look bad. Contributions welcome, would be happy to have a better list of xmpp servers 👍
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