Allows you to post content on multiple WordPress sites from one central location.

= Benefits / Features =
* Minimal elements on a page so it loads very quickly. It is based on Bootstrap (it intentionally does not load within WP Admin).
* Publish or Save posts as drafts all managed from one single location
* Remembers the settings -> publish post, new lines, last used site.
* Remembers logins of multiple sites
* Simple preview
* The page does not refresh (all done through Ajax)

how-to-write-from-one-sinle-location

Cost: Free

Download from WordPress plugin directory

>>  https://wordpress.org/plugins/orbisius-just-write/