SpyMan²°°³, not sure about a program, but just leave your PC on, it will come to no harm, I very rarely turn mine off.
If you want it to disconnect from the net, then choose, (Log off when download completes).
OnePlus 5T review: Hands-on
Illustrator Andrés Lozano on his improv line work, brazen use of colours & hand sketching
iPhone X review
Comment envoyer gratuitement des gros fichiers ?