Facebook is killing it this week.

App Links are Facebook’s new tools, attempting to make it easier for developers to link other applications from their own apps. For instance, if someone tapped on a post from Tumblr in their Facebook feed, they would be taken directly to the Tumblr app rather than a mobile browsing window. This kind of programming exists, and has been called mobile deep linking, but it’s not easy to use since many apps interact in different ways on different platforms in relation to each other.

Using the open-sourced App Links, developers can code the links directly into the guts of their web page, taking a user directly from one app to another without having to login to the other app or getting booted to a mobile page. It’s all about streamlining the process, and helping mobile applications interact seamlessly with each other.

What Sparks Our Fire: Solving a major problem and open-sourcing the solution.

What apps would you like to see linked to each other in this way?