From AlphaOmega Software:
You need to be notified when files, folders or their contents are modified by someone? You want to monitor the content of particular folders or dropboxes? You want to monitor the modification of particular files? Then File Monitor is what you need. File Monitor allows you to be notified of modifications occurring to any kind of files. You can monitor several files and folders at the same time. You can drag and drop files and folders to add them in the monitoring window. You can automatically add folders inside a root folder recursively. You can adjust the monitoring period. It can automatically start monitoring at launch. You can open modified files when their modification is detected. It can automatically send a full detailed email to any recipients when a modification is detected. It can monitor modification dates, and/or sizes, and/or numbers of contained files (for folders). It can automatically continue to monitor after a modification is detected. It can bounce its icon when a modification is detected. It can speak when a modification is detected. It doesn't need any installation which makes it very easy to use. It is available in Dutch, English, French, German, Italian, Polish, Russian, Spanish and many other languages. Read the whole documentation for more details.