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

ObjectBox is a Techstars’17 company

We just joined Techstars London with our Mobile Database ObjectBox. We’re really happy to be part of Techstars and to have the opportunity to learn so much. If you’re interested in learning more about that, we will post regular updates on our Techstars’ journey on our ObjectBox Blog. We already posted on our first days at Techstars and how we got into Techstars. Thanks to everyone who helped us on our journey so far, but especially our developer community on github. We could never have done any of our projects without you and we appreciate your feedback and support a lot! Please feel free to ping us with any questions you may have.

ObjectBox 0.9.10 – getting closer to 1.0

Do you know our new super fast mobile database ObjectBox yet? With versions 0.9.9 and the just released 0.9.10, ObjectBox made great progress to stabilize features for the 1.0 release. With an increasing number of apps using ObjectBox, we were able to spot and fix some less obvious issues. We believe that ObjectBox 0.9.10 is the most stable release ever. If you did not dare to check out the beta version yet: now is a good time to have a closer look.

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ObjectBox Documentation Update

We updated ObjectBox’ documentation to account for the growing interest and more specific questions asked in the issue tracker. We published several updates and new documentation resources:

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greenDAO 3.2.2 Bugfix Release

This week we released greenDAO 3.2.2 with a couple of bug fixes. We want to highlight better interoperability with the Android Gradle plugin. With each new release of Android Gradle plugin, there have been conflicts with greenDAO plugin as both use “JDT”, a library to parse and manipulate Java Sources. To solve those conflicts once and for all, we now ship the greenDAO plugin with a repackaged version of JDT. Thus we are independent of other tools and can use the latest JDT versions. For best developer experience, we recommend everybody to update to greenDAO 3.2.2.

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