Request authentication from users through passphrases or biometrics.

Use the Safari Services framework to integrate Safari behaviors into your iOS app.

AdMob has been rebuilt, leveraging the best of Google's ad platforms. It's designed for app developers, with an intuitive UI to help you start earning from your app quickly, create campaigns in minutes to acquire new users, and gain insights into your app's performance.

The most powerful, yet lightest weight crash reporting solution for iOS and Android developers. | Crashlytics

A full suite of services created by the team that brought you Crashlytics. Fabric provides monetization, engagement and other uses for developers beyond crash reporting.

Render advanced 3D graphics and perform data-parallel computations. Get fine-grained access to the GPU while minimizing CPU overhead. The Metal Framework provides extremely low-overhead access to the GPU, enabling incredibly high performance for your sophisticated graphics rendering and computational tasks. Metal eliminates many performance bottlenecks—such as costly state validation—that are found in traditional graphics APIs. Metal moves all expensive state translation and compilation operations out of the critical path of your most performance sensitive rendering code. It provides precompiled shaders, state objects, and explicit command scheduling to ensure that your application achieves the highest possible performance and efficiency. Graphics, compute, and blit commands can be used together seamlessly and efficiently. Metal is specifically designed to exploit modern architectural considerations, such as multiprocessing and shared memory, to make it easy to parallelize the creation of GPU commands.

C bindings for Google's Protocol Buffers

This document describes the Accelerate framework, which contains C APIs for vector and matrix math, digital signal processing, large number handling, and image processing.