Microsoft has officially launched AppSource, a new way for businesses to search for apps and add-ons that work with Microsoft's products and services like Office 365, Azure and more.

Here's a quick description of AppSource (via WalkingCat):

Microsoft AppSource helps business users find and evaluate line-of-business (LoB) software-as-a-service (SaaS) apps from Microsoft and our partners, including those built on top of Microsoft Dynamics, Office, Cortana Intelligence and the Azure platform, as well as add-ins and content packages for their existing apps.

Any of the apps and add-ons from the AppSource site can be downloaded and tested for free. After the trial period ends, the businesses have the option to purchase the software. Third-party app developers can also submit their products to be included on the AppSource list.