I have long been looking for a solution to replicate something similar to Salesforce's Address Autocomplete feature using Google Api. 

See below image, when you use Search Address, there is a pop up that then uses Google Maps Api to Auto Complete the address, after selecting it, it populates the fields "Street", "City" etc.

This is now a default feature of Salesforce and I could only find a custom version of this also for Salesforce https://github.com/benedwards44/sf-address-autocomplete

Would be a great App if someone is able to build this for Zoho Marketplace.