The NativeScript framework consists of a number of components, all of which are open source and on GitHub. Here are the major ones:

- **[Cross-platform modules](//github.com/NativeScript/NativeScript/)**

- This repo contains the [NativeScript cross-platform modules](http://docs.nativescript.org/core-concepts/modules), which abstract iOS and Android APIs into JavaScript APIs—e.g. `camera.takePicture()`. The modules are written in TypeScript.

- **[iOS runtime](//github.com/NativeScript/ios-runtime/)**

- This repo contains the NativeScript iOS runtime—the code that hosts NativeScript iOS apps, and allows JavaScript code to be executed on iOS devices. The iOS runtime is written in a fun mix of C++, Objective-C, and more.

- **[Android runtime](//github.com/NativeScript/android-runtime)**

- This repo contains the NativeScript Android—the code that hosts NativeScript Android apps, and allows JavaScript code to be executed on Android devices. The Android runtime is written in a fun mix of C++ and Java.

- **[CLI](//github.com/NativeScript/nativescript-cli)**

- This repo contains the NativeScript command-line interface, which lets you create, build, and run apps using the NativeScript framework. The CLI is written in TypeScript.

- **[Docs](//github.com/NativeScript/docs)**

- This repo contains the NativeScript framework documentation, which is available at <http://docs.nativescript.org/>. The docs are written in Markdown.