Open Source folder synchroniser.

Synkron is an Open Source folder synchroniser.

Synkron is an application for folder synchronisation that allows you to configure your synchronisations in detail. Despite having many features, the user interface of Synkron is very user-friendly and easy to use.
Synkron is able to synchronise multiple folders at once, analyse folders before sync, restore overwritten or deleted files, plan synchronisations and much more.
Synkron is a cross-platform application and runs on Mac OS X, Linux and Windows.
Synkron is distributed under the terms of the GPL v2 licence.