BlueJ Alternatives

Eclipse is an open source community, whose projects are focused on building an open development platform comprised of extensible frameworks, tools and runtimes for building, deploying and managing software across the lifecycle.

NetBeans IDE 7.0. Develop desktop, mobile and web applications with Java, PHP, C/C++ and more. Runs on Windows, Linux, Mac OS X and Solaris. NetBeans IDE is open-source and free.

Open Source

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

Try for free Open Source freemium

Capable and Ergonomic IDE for JVM

Xcode is Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.

The world’s most powerful open-source web development IDE just got better. Rebuilt from the ground-up. It's now much faster, customizable and includes new features to help you be more productive.

Open Source

Cloud workspaces for development teams.

Professional IDE for PHP and Web Developers

Build and debug modern web and cloud applications, by Microsoft

Open Source

Python & Django IDE with intelligent code completion, on-the-fly error checking, quick-fixes, and much more...

Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.

The smartest JavaScript IDE

Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware...

Qt Creator is a cross-platform C++, JavaScript and QML integrated development environment. It is the fastest, easiest and most fun experience a C++ developer could wish for.