: A popular checker available via WPSHOP or Codecanyon.
: A free plugin with premium features that requires downloading the ZIP from Curve Studio for installation. Download domain checker zip
: A dedicated bulk domain checker for Windows can be downloaded directly as foxwhois_free_2.5.zip from FoxWhois . Key Features of These Tools Most of these "domain checker" projects include: Download bulk domain checker - FoxWhois : A popular checker available via WPSHOP or Codecanyon
: Several domain checker plugins are distributed as ZIP files for manual upload to WordPress: Download domain checker zip
: A simple Domain Check Availability script is available on GitHub Gist, which can be downloaded as a ZIP by clicking the "Download ZIP" button.