Abstract: Systems and methods are provided to enable bundling of software applications across multiple, disparate platforms, such as for example, bundling PC applications with mobile applications. The system enables mobile application developers to make offers to publishers of PC software to compensate the publishers for presenting advertisements for mobile application developers' product offerings during the installation of the publishers product offerings on user PCs. The publishers integrate an offer manager into their installation packages. When the installation packages are installed on a user's PC, the offer manager communicates with a software bundling service and identifies relevant offers, such as, for example, offers made by mobile application developers that are partnered with the software publisher supplying the installation package. Relevant offers are then presented to the user on the users PC, and if accepted, a download URL for a mobile user's application is transmitted to a user mobile device.