gWakeOnLAN
Wakes up your machines using Wake on LAN
A free GTK+ application to awake your machines using Wake on LAN
gWakeOnLan is a GTK+ utility to awake turned off computers through the Wake on LAN feature. Both local and internet modes are supported. . The machines to turn on need to be shut off with the Wake on LAN magic packet enabled.
How to install gWakeOnLAN in Ubuntu
If you are on a supported distro, you can install the application through software center by clicking the below link.
If the above link not working, run the below command in terminal to install gwakeonlan in Ubuntu
sudo apt install gwakeonlan
gWakeOnLAN Screenshots