nreljin

A lightweight tool to move content between WordPress sites with precision.
Features 
– Export a single post or page to JSON (includes meta, terms, and revisions) 
– Import a previously exported JSON to recreate the post on another site 
– Works with all public post types; sets current user as the author on import 
– Adds an Export action in Posts/Pages list rows 
– Adds Tools → Post Import with a file upload form 
– Robust UTF-8 handling: exports HTML‑entity encode content/meta; imports decode to avoid double‑encoding
Perfect for 
– Migrating content between environments 
– Duplicating complex posts across sites 
– Archiving rich post data including revision history

NR Post Exporter

Export/import individual posts with meta, terms, and revisions. Adds Export row action and Import screen.

Dion Hulse

** Support for this plugin is NOT offered, This plugin still however works. Please don’t expect support requests to be answered, or “This doesn’t work” reviews to be responded to. **
Revision Control is a plugin for WordPress which gives the user more control over the Revision functionality.
The plugin allows the user to set a site-global setting (Settings -> Revisions) for pages/posts to enable/disable/limit the number of revisions which are saved for the page/post. The user may change this setting on a per-page/post basis from the Revisions Meta box.
The plugin also allows the deletion of specific revisions via the Revisions post metabox.

Revision Control

Revision Control allows finer control over the Post Revision system included with WordPress

NR Post Exporter vs Revision Control