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Gorgeous native mobile app development with Java or Kotlin for iPhone, Android etc....

Codename One Academy

Build complex real world apps with full backend & front end implementations!
Covers the full process of building these apps:

  • Uber clone app - functioning clone of an Uber app with driver mode, maps, hailing and more
  • Restaurant Ordering App - Includes menu selection, billing etc.
  • App Builder - App builder application that generates restaurant specific apps
  • Social Network App (coming soon) - we introduce a new app every 3 months and let you vote on it
 

180M App Installs

40K Developers

1M Cloud Builds

BuildWrite code in Java(tm) using Eclipse, NetBeans or IntelliJ/IDEA

TestVerify your app with our simulator, devices & test automation tools

DeployGenerate native binaries for all device types using the Codename One build cloud

What's so special about Codename One?

We are the only ones that provide...
Write Once Run Anywhere, no special hardware & 100% code reuse
Compile Java(tm) or Kotlin to native iOS, Windows (UWP), Android, Desktop & JavaScript
Easy to use with 100% portable Drag & Drop GUI builder
You can control every pixel and draw anywhere
Full access to native OS using the native language (e.g. Obj-C, C# etc.)
Use native widgets & mix them with our components in the hierarchy (heavyweight/lightweight mixing)
Open Source & Free for commercial use with enterprise grade commercial offering

Testimonials

Chidiebere Okwudire
Chidiebere Okwudire SMash ICT Solutions/Senior Engineer at Sioux, Netherlands

"Affordable cross-platform toolchain that works!"

Easy extension with third-party libraries, active developer support and attractive pricing...

Ram Nathaniel
Ram Nathaniel CEO & Founder of MathUnderground, Israel

"Over 2 million active installations"

[A] mature, solid & reliable platform. It allows you to concentrate [on] developing your app, not platform specific implementations...

Fabrício Cabeça
Fabrício Cabeça Senior Developer at Pmovil, Brazil

"Going from design to working app is a breeze"

Codename One greatly reduced our development time and costs, while giving us the ability to deliver a custom experience in each platform when needed.

Ali Sayed
Ali Sayed Senior Developer, Egypt

"The best cross platform app development tool"

Its native access allowed us to add functionalities without limiting developers to platform capabilities.

Fabrizio Grassi
Fabrizio Grassi Chemetall, Italy

"a true write once run anywhere solution!"

Codename One has proven to be a productive tool for us - a true write once run anywhere solution!

Rex Green
Rex Green Vision24, South Africa

"Fast & efficient"

Fast & efficient way to eliminate the hassle of targeting multiple platforms without resorting to HTML5!

Hélio Rugani
Hélio Rugani Sócio Proprietário, Brazil

"Simply a great framework!"

[We had] some non conventional requirements & Codename One gave us good answers for all the challenges that we faced during app development.

Gareth Murfin
Gareth Murfin Developer, Taiwan

"I utilize my Java knowledge to deliver native apps"

I can deliver native apps for both platforms from a single codebase in half the time, at half the cost, with no need to hire anyone.

 Lucky Oscar Masango
Lucky Oscar Masango CTO at BOi Global Group, South Africa

"I would advise to all developers to try it out today!"

[It] has given us the ability to develop apps for all mobile platforms [quickly] & at a low cost. [It's] the most innovative tool of this generation...

Get started right away!

Start Now! It's Free!

Built with Codename One

Check out the full gallery here & our demos here
Want us to build your mobile app? Learn more here

Latest Posts From Our Blog

Migrating from App Engine to Spring Boot

Migrating from App Engine to Spring Boot

Over the weekend we migrated a huge amount of code to the new build servers. In this post I'll try to cover three separate things. I'll explain the architecture/history and process of the migration. What worked, what didn't work and lessons learned. And finally how this will impact Codename One users moving forward.

New Build Cloud

New Build Cloud

This is important! We will replace the entire build infrastructure of Codename One over this weekend. That means that you might see disruptions in service through the weekend but please report them to us as we might not be aware!
We are finally removing the last remaining pieces of the horrible mess that is Google App Engine from our backend code. This is a huge job and is sure to cause some disruption.

Moving Away from Intercom

Moving Away from Intercom

A few years ago a consultant convinced us to integrate Intercom into our website. In retrospect this was a mistake which I'll discuss in more depth below. We are migrating away from Intercom right now... That means that if you have an email address or ongoing chat history with us in Intercom it might get lost!
Worse. If you unsubscribe this might also get lost due to the migration process (sorry about that!). We're moving to a new far better system (crisp).

ToastBar Return Value

ToastBar Return Value

Last week I pushed out an enhancement to ToastBar that changed the static showMessage methods. I made them return the Status object instead of void which would allow more control of the toast message after it's shown. Unfortunately, I totally forgot that I can't do that without breaking some binary compatibility.

Start now! It's free!