Inventory Management / Stock Control

Has anyone got an inventory management extension or software package that they have integrated to Opencart?

I see lots of extensions to show customers what is in stock, but I cannot find anything to help admin to manage / fulfil orders?

So when an order comes in for 20 of an item I might have 9 in stock and be able to order the additional required. I would like to be able to see this on the product tab in the order?

I hope someone can advise / help me with this as I can't believe that all of the OpenCart users out there don't have inventory management / stock control :-)

Thank you

you can prevent customers from purchasing more than what you have by controlling the system settings to do the job.

If you are taking in orders when you do not have stock, and wish to add notes to 'remind' yourself of it, you can try the stick notes extension I have seen quite a few people using it to write notes on their admin panel.