Candidate List

Name: SimpleCI
Home: https://github.com/DirectMyFile/SimpleCI
   SimpleCI is a Continuous Integration Server written in Groovy

Name: SocketTest
Home: http://sockettest.sourceforge.net/
   A java tool for socket testing. It can create both TCP and UDP client or server. It can be used to test any server or client that uses TCP or UDP protocol to communicate.

Name: Apache Solr
Home: http://lucene.apache.org/solr/
   Solr is the popular, blazing fast open source enterprise search platform from the Apache Lucene project. Its major features include powerful full-text search, hit highlighting, faceted search, near real-time indexing, dynamic clustering, database integration, rich document (e.g., Word, PDF) handling, and geospatial search.

Name: Sonar
Home: http://www.sonarqube.org/
   SonarQube is an open platform to manage code quality

Name: Apache Spark
Home: http://spark.apache.org/
   Apache Spark is a fast and general engine for large-scale data processing.

Name: Sqoop
Home: http://sqoop.apache.org/
   Apache Sqoop(TM) is a tool designed for efficiently transferring bulk data between Apache Hadoop and structured datastores such as relational databases.

Name: SquirreLSQL
Home: http://squirrel-sql.sourceforge.net/
   Universal SQL Client writtern with Java

Name: Storm
Home: http://storm-project.net/
   Distributed and fault-tolerant realtime computation

Name: Swarm Tool
Home: http://wildfly-swarm.io/
   WildFly Swarm offers an innovative approach to packaging and running Java EE applications by packaging them with just enough of the server runtime to "java -jar" your application

Name: Tajo
Home: http://tajo.apache.org/
   Apache Tajo is a robust big data relational and distributed data warehouse system for Apache Hadoop. Tajo is designed for low-latency and scalable ad-hoc queries, online aggregation, and ETL (extract-transform-load process) on large-data sets stored on HDFS (Hadoop Distributed File System) and other data sources.

Name: Apache Tika
Home: http://tika.apache.org/
   The Apache Tika™ toolkit detects and extracts metadata and structured text content from various documents using existing parser libraries.

Name: Tomcat
Home: http://tomcat.apache.org
   Java Web Server

Name: TomEE
Home: http://tomee.apache.org/
   Apache TomEE is an all-Apache Java EE 6 Web Profile certified stack where Tomcat is top dog.

Name: TorqueBox
Home: http://torquebox.org/
   TorqueBox is a new kind of Ruby application platform that supports popular technologies such as Ruby on Rails and Sinatra, while extending the footprint of Ruby applications to include built-in support for services such as messaging, scheduling, caching, and daemons.

Name: ttorrent
Home: https://github.com/turn/ttorrent
   Turn's BitTorrent Java library (tracker and client)

Name: UIMA
Home: http://uima.apache.org/
   Unstructured Information Management applications are software systems that analyze large volumes of unstructured information in order to discover knowledge that is relevant to an end user. An example UIM application might ingest plain text and identify entities, such as persons, places, organizations; or relations, such as works-for or located-at.

Name: UltraESB
Home: http://adroitlogic.org/products/ultraesb.html
   UltraESB is a Free and Open Source Enterprise Service Bus

Name: Aardvark
Home: http://vark.github.io/
   A build tool based on the Apache Ant library and the Gosu language

Name: Vert.x
Home: http://vertx.io/
   Effortless asynchronous application development for the modern web and enterprise

Name: Groovy VFS
Home: https://github.com/ysb33r/groovy-vfs
   A DSL for Groovy on top of Apache VFS2