sentences:  The developers worked on Felix for a full year and have made various improvements while retaining the original footprint and performance.On June 21, 2007, the project graduated from incubation as a top level project and is considered the smallest size software at Apache Software Foundation.To run Apache Felix OSGi, you need to download the felix-framework-4.x.x.tar.gz or felix-framework-4.x.x.zip compressed file from the site.