Hi there, Bhagath .
All Intuit accredited third-party applications can be synced through the Apps menu in QuickBooks Online. If you can't see it there, you can send a feature request directly to our engineers. Just go to the Gear icon and click Feedback.
There's also a dedicated forum for developers who want to integrate their own app with QuickBooks Online. Let me route you to this link: https://help.developer.intuit.com/s/.
Visit us again in the Community if you have other questions. Thanks for dropping by.