NetBeans is an integrated development environment (IDE) initially created in 1996 as a college project called Xelfi. It was later commercialized as NetBeans and acquired by Sun Microsystems in 1999. NetBeans IDE is an open source IDE that supports development of desktop, enterprise, web, and mobile applications in languages including Java, PHP, and JavaScript. The NetBeans Platform is a framework upon which the IDE itself is built and allows modular extensibility through plug-ins. Major companies like Northrop Grumman, Raytheon, and Boeing use applications built on the NetBeans Platform.