Simple web page that can read and display a WhatsApp database (iOS version only).
https://github.com/lbalogh/WhatsAppDBReader
Use a Raspberry Pi as a combined iPhone power adapter / backup
https://github.com/corsac-s/ipibackup
A library to communicate with services of Apple iOS devices
https://github.com/libimobiledevice/libimobiledevice
libimobiledevice installation guide
https://askubuntu.com/questions/598940/libimobiledevice-1-2-ios-8-support-for-ubuntu-14-04-trusty/712154#712154
Reverse Engineering the iOS Backup
https://www.richinfante.com/2017/3/16/reverse-engineering-the-ios-backup/