See here: https://github.com/nickfarrow/frostr Still has a long way to go, but you can create an account and post for the time being, see my GitHub issue raised here: https://github.com/nickfarrow/frostr/issues/5#issuecomment-2641938317

See here how Parker is / was right, but won’t be for much longer: https://primal.net/e/note1ms5ldsqp38q43fsm5hfycc3s3ap7xqhd35veaduckfc2ewevcl4sufrv6p