PlainInventory – Inventory Management Plugin


PlainInventory is intuitive, easy to use online inventory management and tracking plugin for WordPress.

Organize your sales, orders, customers, suppliers and much more with a fast, simple WordPress plugin solution.


  • Inventory Management.
    Manage your inventory and check stock levels in real-time online. Act on low inventory and generate purchase orders to fill your stock.

  • Purchase Orders.
    Easily replenish your inventory levels by ordering more stock.

  • Track Sales Orders.
    Manage your sales and deliveries.

  • Reports.
    Monitor utilization for all your inventory at a glance or focus on specific items.

  • WooCommerce Integration.
    Make use of your WooCommerce products database as the source for inventory list.

Get started in minutes with the quick start guide now!

Pro Version Features

Inventory Stats
The stats module lets you keep track of current quantity, average cost and price.

Copy Sales and Purchases
Quickly duplicate existing purchases and sales with the copy module.

Transaction History
Review the changes ever made to a transaction.


Please contact us at

Author: Plainware
Author URI:


  • List current inventory.
  • View purchase order details.
  • Edit items for a purchase order.
  • Manage suppliers and customers contacts.


Automatic installation

Automatic installation is the easiest option as WordPress handles the file transfers itself and you don’t even need to leave your web browser.
To do an automatic install:

  • Log in to your WordPress admin panel, navigate to the Plugins menu and click Add New.
  • In the search field type “PlainInventory” and click Search Plugins.
  • Once you’ve found the plugin you can install it by clicking Install Now.

Manual Installation

The manual installation method involves downloading the plugin and uploading it to your web server.

  • Download the plugin file and unzip it.
  • Using an FTP program, or your hosting control panel, upload the unzipped plugin folder to your WordPress installation’s wp-content/plugins/ directory.
  • Activate the plugin through the ‘Plugins’ menu in the WordPress admin.


How do I get started with PlainInventory?

Please view the documentation guide for advice getting started with the plugin.


May 18, 2021
Lightweight functional plugin. Just what I needed. The support responds very quickly. Thanks to the authors.
February 17, 2017
I was looking around for this kind plugin and I found this! Easy to use easy to install Good Job
Read all 1 review

Contributors & Developers

“PlainInventory – Inventory Management Plugin” is open source software. The following people have contributed to this plugin.


“PlainInventory – Inventory Management Plugin” has been translated into 4 locales. Thank you to the translators for their contributions.

Translate “PlainInventory – Inventory Management Plugin” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



  • Added a setting to define the currency format display.


  • Added WooCommerce products integration into inventory database.


  • Added automatic update for Pro version.


  • Minor fixes.


  • Minor fixes.


  • Added fixes for compatibility with PHP 8.2.


  • Minor fixes.


  • BUG: it might not install on some WP configurations due to an error in install script.


  • Updated translations.


  • BUG: Paging links weren’t displayed for the transactions list.


  • BUG: Search didn’t work in the contacts list.


  • Modified user permissions part: only one role for user and the ability to override default permissions.
  • Minor fixes.


  • BUG: Items couldn’t be added to transactions.
  • BUG: Settings/About page displayed an error.
  • Minor fixes.


  • A few code optimizations.


  • Added Customers for Sales and Suppliers for Purchases.
  • Simplified orders and purchases: removed shipments and receipts. Items are now considered delivered if the purchase or the sale is set to the Issued state.
  • WooCommerce integration is (temporily) disabled.
  • Internal framework update.


  • Updated language file up to date.
  • Added Finnish language.


  • Plugin ownership has been changed to Plainware.


  • Modified the “Add Items” view for sales and purchases so now it’s possible to add multiple items at once.
  • Internal framework update.


  • BUG: Fatal error if used together with WooCommerce.


  • Added delete actions for items, purchases and sales.
  • Internal framework update.


  • If WooCommerce is installed, our plugin can use its products as inventory source.


  • A major update with effective minimal design, quick framework core code.


  • BUG: translation files were not active.


  • Added .pot language template file.
  • Minor code cleanup.


  • Broken view in the purchase receive view.


  • A couple of code changes to speed things up a bit.


  • Initial release