Open Source libraries to make apps and app development fast and fun - less boilerplate and managing infrastructure code

Our open source libraries run on over a billion devices and are used by large companies with especially high performance requirements.
Learn about our widely used, battle-tested, and performance-optimized open source libararies for mobile app development:

> 2.000.000.000 people rely on greenrobot libraries

Slim & fast - that is what we stand for and that is why thousands of mobile developers wordlwide use our solutions, leading to more than a billion mobile users relying on our code

apps fast on the road

Superfast

Above all, we value performance. Speed matters. Thus, we constantly benchmark our solutions against alternatives and optimize for performance.
lean and light development

Lean & light

We keep all our solutions small and frugal. We also ensure all our open source libraries are optimized for maximum battery-friendliness. Perfect for mobile.
Easy to use libraries

Easy-to-use

We are developers ourselves and value the fun aspects of coding. Accordingly, our libraries are easy to use and save developers from tedious and unituitive tasks.
Open development

Developer-driven

We are passionate to deliver high performant, slim, and elegant solutions. Our libraries have more than 15.000 GitHub stars and are industry-proven.

Mobile News from greenrobot

Library updates, new releases, related developments in open source, mobile databases, and Android

IOT Android Things

Android Things for IoT developers

Android Things™ was revealed by Google on December 13, 2016. Formerly know as Brillo, which was announced during Google IO 2015, Android Things now is available as a developer preview. The Android Things SDK documentation basically says that developers can use almost the full Android stack for mobile. On top of that there is the “Things Support Library” offering APIs to interact with peripherals and “user drivers”. Both expose a Java API, so “user drivers” are not that close to the metal as the name might suggest.
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greenDAO 3.2(.1) Release

With greenDAO 3.2.x we are improving Android studio compatibility. Actually, greenDAO 3.2.0 was already released a couple of weeks ago, without a notification post. The first 3.2 release aligned an internal dependency (JDT ) to work nicely with Android Studio 2.2. Also, it added Protocol Buffers support to annotations. Today we are releasing 3.2.1 for the greenDAO plugin. Note that the core greenDAO lib and the generator did not have to be updated and thus remain at V3.2.0. This plugin update further improves Android Studio and Jack compiler integration and fixes some bugs. Check the changelog for details.

ORM FAQ

SQLite access with an ORM – FAQ

What is an Object-Relational-Mapper (ORM)?

An ORM is a layer between the relational SQLite database and the object-oriented app code. The ORM allows the developer to use the database without the need to transform objects into a format suited for the relational database.

Do I need an ORM to work with SQLite?

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greenDAO 3.1.1 Bugfix Release

Today, we released a new version of greenDAO addressing some issues with @Entity annotations. If haven’t tried them yet, please give them a try. We think this is the most convenient way to work with greenDAO, or SQLite in general. For details on the 3.1.1 improvements, please check the changelog.

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