Netbeans - 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.
Treehouse - Treehouse is an award-winning online platform that teaches people how to code.
Eclipse - 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.
Teachable - Create and sell beautiful online courses with the platform used by the best online entrepreneurs to sell $100m+ to over 4 million students worldwide.
IntelliJ IDEA - Capable and Ergonomic IDE for JVM
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.