InSync is a directory synchronizer that allows you to rapidly make identical copies of directory structures and all files within. This is useful in performing backups and propagating data from one machine to another. Using InSync you can define and run multiple synchronization jobs that can specify one or more source directories, each which can be synchronized to one or more target directories. InSync uses state of the art techniques copying only data that is different between source and target directories. It also takes advantage of multi thread processing, allowing parallel processing of multiple jobs.