crosspost – The unofficial WordPress Plugin Directory

Post Signature

Appends the post author's display name to posts. Useful for multi-author blogs that are crossposted elsewhere, such as LiveJournal or Facebook.

CrossPost to Friendika for WordPress

Automatically add posts from another WordPress website using a shortcode like [blogcrosspost url="example.com"]

Automatically share WordPress (image) posts on Pixelfed.

Automatically crossposts your WP entries to your LiveJournal or LJ-based clone.