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I was wondering if there is open source project for windows based system were I could sync two folder within the same operating system.

I have done some jobs for clients with comercial versions of PeerSync and Double-Take but I find that some work that I do does not require lot of features thous two offer and I could manage with open source project in most cases, but I was not able to find one.

I'm not interested in build-in windows features that would do the job - just to avoid TIPS on how to do it.

The sync should be process always running and waiting for file system triggers. Sync should not have to be triggered manually.

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Do you really need "Open Source" or are you just looking for "Free"? – Ƭᴇcʜιᴇ007 May 22 '11 at 20:22
Open source since I would like to learn about the System API and triggers. – Mat Banik May 22 '11 at 22:34
FindFirstChangeNotification (native) and FileSystemWatcher… (.NET) is what you want. – John T May 23 '11 at 23:22
Thanks John, they are really helpful! – Mat Banik May 24 '11 at 0:55
up vote 3 down vote accepted

This page lists:

But only FreeFileSynch appears to be open source and non-commercial.

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Check out PureSync. The free version has everything you're looking for and then some. Excellent software.

It features user-definable synchronization triggers, including an automatic sync upon file/folder modification. enter image description here

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