Alternative to lemmy by tedu of OpenBSD fame. It uses ActivityPub and is actually compatible with lemmy. Here is an example instance:
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Just tried it there it is blazingly fast and from the stats it seems super light on resources too. It also works great without js and cookies at least to browse.
Looks like it is coded in golang and is using sqlite for the back end.
It has an old school web vibe to it.
No Javascript you say…nice.