I need a backup software...

[Inspector Jihad]

I want it to monitor a folder and keep it synced with a folder on an external drive...this is for my pictures and music. this way, it would keep updated and i could take my external drive whenever I wanted with it being updated. Thanks

 

[Inspector Jihad]

 

[BlueWeasel]

MS Synctoy
Syncback

Synctoy is free from MS, but doesn't supporting monitoring. Syncback also has a free version, but I don't believe it supports monitoring in the background either. Both versions are excellent, though, and mirroring to an external drive is easy and fast.