Some interesting tools LiteManager, it is free for home and business use. There is a lot of features for remote access, file transfer, regedit, task manager and other, look at if you have some free time...

LiteManager free up to 30 PC, there are free client for Android, Mac OS, iOS and Linux

LiteManager Free one of absolutely free software for home and business use for 30 PC.

LiteManager is free remote access software for home or commercial use. Connect without IP address through LiteManager Connect by Id mode

LiteManager nice free tool for remote access