Launch day, every time: write the announcement once, then paste it into X, LinkedIn, Bluesky, Mastodon, and a dozen other tabs — fixing link previews and character limits on each.
I got tired of it and built Crossposter: compose once, pick your channels, publish to all of them from your own machine.
npx @apoorvdarshan/crossposter@latest
It opens at http://localhost:2004. No cloud, no account, MIT-licensed.
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