https://www.familyecho.com/ https://www.familyecho.com/ is the lightest one. It's almost offline. Some light reverse engineering can make it work totally offlin

https://www.familyecho.com/ https://www.familyecho.com/ is the lightest one. It's almost offline. Some light reverse engineering can make it work totally offline. I saw a version of it on Github too. Some features had problems, I think it was printing which was failing.