Web based broken link checker

I am in need of a Web Based script that basically checks the status code of multiple websites that are entered into the system. In a nutshell this script will be checking for "broken outbound links" from the urls provided in a text file. I would only like for it to return results for sites have the "no such host" result equivalent to results displayed by xenu. This script will be very similar to the software [login to view URL] however without so many features. The main difference is that I will need this script compatible on a linux based web server that runs on autopilot 24/7. Key features: - The option to have the script check 10's of thousands of urls entered into the system via text file - The option to return one status code for domain results that will be exported. (no such host found for domains that are not available via web browser) - The option for an output that is available for download via excel format once the system has finished its task - There needs to be a status bar with a percentage of how much longer it will take a task has to processed - The option to have the script run completely in the background once you close/navigate away from the page - The option to have multiple tasks running at the same time - The option to display the current resource usage of the script on the linux server and how much more can be allocated - The option to have your excel file sent via email once a task has been completed Before placing your bid/proposals, please be sure that you are 100% familiar with Xenu and the exact purpose of the script in question. Looking forward to your proposals.