Automatic Notification of New or Changed Files in a Folder or Share [closed]

I'm looking for some Open Source [free] or relatively inexpensive solution for monitoring specific folders on a file system and 'Windows' network with several shares. When a file is added or changed, I would like to be able to notify myself and/or others that there is a new file, or changes to the current files. We have a SBS 2003 Server with a couple of shares, in a small non-profit office.

I would prefer:

• Runs on Server Side (we have both Windows and Linux servers)
• Notification on different time scales - hourly/daily/weekly
• Notification sent via e-mail to different addresses

It would be entirely possible to 'roll my own' using bash/php/program of choice but I am curious as to any current solutions to avoid re-inventing the wheel. Also would love to hear anyone using a current system or how they have implemented this idea in their office.

Also most office workers are non-computer literate so git or other version control system isn't an option at this point.

For your linux server you can use inotify-tools based on inotify. For your windows server I haven't a solution.

If you wanted an Open Source tool, I'd recommend OSSEC (works on both Windows and Linux), which also offers commercial support if required.

A commercial option is Verisys. It's easy to use and a lot cheaper than Tripwire (from your question I would say that Tripwire would be way too expensive, and bloated for your requirements).