Ionic makes it incredibly easy to build beautiful and interactive mobile apps using HTML5 and AngularJS. An open source mobile UI toolkit for building high quality, cross-platform native and web app experiences. Move faster with a single code base, running everywhere with JavaScript and the Web.

The Android platform provides a framework API that applications can use to interact with the underlying Android system. The framework API consists of: A core set of packages and classes. A set of permissions that applications can request, as well as permission enforcements included in the system

Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all users to experience the web. This site contains design documents, architecture overviews, testing information, and more to help you learn to build and work with the Chromium source code.

This plugin allows you to use the native sharing window of your mobile device. Cordova plugin to share text, a file (image/PDF/..), or a URL (or all three) via the native sharing widget

Apache Cordova is a platform for building native mobile applications using HTML, CSS and JavaScript.

The plugin provides access to the standard interface that manages the editing and sending an email message. You can use this view controller to display a standard email view inside your application and populate the fields of that view with initial values, such as the subject, email recipients, body text, and attachments. The user can edit the initial contents you specify and choose to send the email or cancel the operation. Using this interface does not guarantee immediate delivery of the corresponding email message. The user may cancel the creation of the message, and if the user does choose to send the message, the message is only queued in the Mail application outbox. This allows you to generate emails even in situations where the user does not have network access, such as in airplane mode. This interface does not provide a way for you to verify whether emails were actually sent. Using this interface does not guarantee immediate delivery of the corresponding email message. The user may cancel the creation of the message, and if the user does choose to send the message, the message is only queued in the Mail application outbox. This allows you to generate emails even in situations where the user does not have network access, such as in airplane mode. This interface does not provide a way for you to verify whether emails were actually sent.

Easily create apps using the web technologies you know and love: HTML, CSS, and JavaScript. PhoneGap is a free and open source framework that allows you to create mobile apps using standardized web APIs for the platforms you care about. Build great apps powered by open web standards. Cut down on development time by re-using your existing web dev skills, frameworks and tools. Get all the benefits of cross-platform development while building apps just the way you like.

ZXing ("zebra crossing") is an open-source, multi-format 1D/2D barcode image processing library implemented in Java, with ports to other languages.