- Some hosters (for example Siteground) offer staging functions via the admin interface. That is the most simple solution.
- My favorite service: https://wpstagecoach.com/wp-stagecoach-support-teams/
- Copies the whole page to the stagecoach servers to make there a new instance
- 12 $ per month
- up to 10 Sites per year
- https://localwp.com/
- Setup WP locally
- 20 $ per month
- unlimited pages
- https://wp-staging.com/
- Copy your installation to a subfolder
- 89 € (one-time payment, 1 year support)
- 1 active Site
- MAMP PRO 4 (https://www.mamp.info/en/store/)
- Setup WP locally
- 67,5 € per license (one time)
- https://www.wampserver.com/en/
- Free
If there is something outdated or missing, let me know.