Remote task manager needs no installation, just unzip it to some folder and start it.

Remote Administrator can help you shutdown remote computer, kill remote process, change remote computers domain, view system information of remote computer, start, stop, enable and disable services on remote computer, send message (works if you have messe It requires no installation on remote machine!

The program won't work if you have personal firewall and if you don't
permit program to communicate with other computers, also it wont work
if on remote computer is personal firewall.