OSGi给出了一套Java模块化规范，这套规范给出了OSGi框架的定义，而具体的OSGi平台，如Felix和Equinox则分别是Apache和Eclipse开源社区给出的标准规范的实现(OSGi gives a set of Java modular specifications, which provide the definition of the OSGi framework, while the specific OSGi platforms, such as Felix and Equinox, are implementations of standard specifications given by Apache and Eclipse open source communities)