Extended Product Grid with Editor for Magento will help you add the necessary product attributes and edit product data on the product grid to immensely increase time efficiency of your catalog management process.

Add attributes to the product grid.

It is possible to add any attributes of 'text', 'text area', 'dropdown', 'multiple select' and 'yes/no' types to the product grid. So you can display all the necessary information on your configurable product grid. With the Magento filter by attribute feature you can easily  filter and sort products. Make your Magento admin grid a lot more informative and functional.

Disable some columns for the product grid.

You can also disable these product grid columns if you need: Type, Attribute Set Name, Status and Websites and enable them back at any time.

Display related, cross-sell and up-sell products on the grid.

The module enables you to show related, cross-sell and up-sell products on your configurable grid, so you can quickly see related items for each product.

Ability to quickly check out your changes on the front end

The module lets you show a column with direct links to the product pages on front end. So you can quickly go to any front end product page right from the product grid and check if all your changes have been applied correctly.

Some other extension features include:

 You can find more info about Magento Product Gris extension at http://amasty.com/extended-product-grid-with-editor.html