Similar to Log4j
Apache Mahout
Apache Mahout
Apache Maven
Apache Maven
Apache OpenNLP
Apache OpenNLP
OpenOffice.org Writer
OpenOffice Writer
Apache POI
Apache POI
Apache Portable Runtime
Apache Portable Runtime
Apache Spark
Apache SparkApache Sqoop
Sqoop
Apache Subversion
Apache Subversion
Apache Thrift
Apache Thrift
Apache Velocity
Apache Velocity
Apache Xalan
Apache Xalan
Apache Xerces
Apache Xerces
BIRTプロジェクト
BIRT ProjectDasher
Dasher (software)DSpace
DSpace
Eclipse (統合開発環境)
Eclipse (software)GeoServer
GeoServer
GlassFish
GlassFish
ImageJ
ImageJ
JEdit
JEdit
Jetty
Jetty (web server)Jitsi
JitsiJRuby
JRubyApache Beam
Apache Beam
Apache Struts
Apache Struts
Apache Wicket
Apache Wicket
NetBeans
NetBeans
