How to transfer the ownership of Salesforce managed package back to us(Since it is developed by a 3rd party)?

Hi @Abhay

SFDC managed package apps that are not published in the AppExchange are associated with a developer account. They are first built on a Salesforce Developer instance, tested there, and then you create a URL from the developer account to the app, which in turn you can use to install the app in your production Salesforce account. Considering this, here are your options

1. If your 3rd party developer created a new developer account for you for developing the app (and there is a 99% chance that they did), all you have to do would be to change the login credentials of that developer account.
2. If they have used their personal developer account and are not going to relinquish it to you, or you cannot change the credentials of the current account because of other reasons, or you want to start from fresh, then you would have to use the ANT migration tool to migrate your existing packages to a new Developer account. Developer accounts are free by the way so its not a problem to create one.
3. If you have published the app on AppExchange then you would also need the login credentials of Salesforce Partner’s profile. If you have it then change the credentials to revoke access from 3rd party vendor. If you don’t then ask for it from them, or log a case in Salesforce Support.

Do tell us if this solves your problem.

Hi Rex, to clarify on your third point. If the appexchange app was published by partner A, can it be transferred to partner B without needing to resubmit to appexchange?