Can payroll processed in Paybooks (Intuit's) be linked to Online Quick books?

Yes, this is possible in QuickBooks Online (QBO), @gopaulv.

Here's how:

1. Log in to QBO as a master admin or company admin.
2. Go to the Apps tab.
3. Select My Apps.
4. Choose Paybooks in the Action drop-down menu, then Launch.
5. It will open Paybooks in a new browser tab.

Check out this article for additional details on this process: Paybooks is now available in the Apps tab. It includes a list of FAQs, along with their answers. 

Please know that you're always welcome to post here in the Community if you have questions about other apps you can sync to QBO. Leave a comment below, and I'll take care of them for you. Have a nice day!