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Welcome to Apache Felix

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What is Felix?

Felix Apache Felix is a community effort to implement the OSGi R4 Service Platform, which includes the OSGi framework and standard services, as well as providing and supporting other interesting OSGi-related technologies under the Apache license. The ultimate goal is to provide a completely compliant implementation of the OSGi framework and standard services and to support a community around this technology. Felix currently implements a large portion of the OSGi release 4 specification, but additional work is necessary for full compliance. Despite this fact, the OSGi framework functionality provided by Felix is very stable.OSGi technology OSGi specifications originally targeted embedded devices and home services gateways, but it is they are ideally suited for any project that is interested in the principles of modularity, component-orientedorientation, and/or service-orientation. OSGi technology combines aspects of these aforementioned principles to define a dynamic service deployment framework that is amenable to remote management. As an example of a simple use case, Felix can be easily embedded into other projects and used as a plugin or dynamic extension mechanism; it serves this purpose much better than other systems that are used for similar purposes, such as Java Management Extensions (JMX).

What is OSGi?

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Refer to the news archive for all news.

Apache Felix Subprojects

The Felix project is organized into subprojects, where each subproject targets a specific OSGi specification or OSGi-related technology; the following list summarizes each released subproject:

  • Config Admin - An implementation of the OSGi Configuration Admin service specification for managing bundle configuration properties.
  • Dependency Manager - An API-based component model to simplify OSGi-based development.
  • Event Admin - An implementation of the OSGi Event Admin service specification for event-based communication.
  • File Install - A simple, directory-based management agent for managing bundle deployment.
  • Framework - An implementation of the OSGi R4.2 core framework.
  • Gogo - An advanced shell for interacting with OSGi frameworks.
  • HTTP Service - An implementation of the OSGi HTTP Service specification.
  • iPOJO - A sophisticated service-oriented component model to simplify OSGi-based development.
  • Log - A simple, memory-based implementation of the OSGi Log service specification.
  • Maven Bundle Plugin - A Maven plugin to simplify building bundles.
  • Maven SCR Plugin - A Maven plugin to simplify using Declarative Services.
  • Metatype - An implementation of the OSGi Metatype service to describe types needed by bundles.
  • OSGi Bundle Repository - A bundle repository service to simplify discovering and deploying bundles and their dependencies.
  • Preferences - An implementation of the OSGi Preferences service specification for storing settings and preferences.
  • Remote Shell - A remote, text-based interface to the Apache Felix Shell.
  • Service Component Runtime - An implementation of the OSGi Declarative Services specification providing a service-oriented component model to simplify OSGi-based development.
  • Shell - A very simple shell service implemented as a bundle for interacting with an OSGi framework instance.
  • Shell TUI - A simple, text-based interface to the Apache Felix Shell.
  • UPnP - An implementation of the OSGi UPnP Device service specification for UPnP device integration.
  • Web Console - A simple tool to inspect and manage OSGi framework instances using your favorite Web Browser.

Several other unreleased subprojects also exist, please refer to the Subprojects page for more. To see some projects using Felix subprojects, refer to the community documentationThe term OSGi generally refers to either the OSGi Alliance organization or the OSGi Service Platform technology. The OSGi Alliance is an independent corporation whose purpose is to define a specification to deliver services over wide-area networks to local-area networks and devices. The OSGi Alliance has numerous corporate and individual participants who are ultimately responsible for defining the features of the OSGi Service Platform. The OSGi Alliance releases a detailed specification describing the features and capabilities of its OSGi Service Platform, which can then be freely implemented by anyone. For more more information on OSGi or to retrieve the specification, refer to the OSGi Alliance web site.