Candidate List

Name: Presto
Home: http://prestodb.io/
   Presto is an open source distributed SQL query engine for running interactive analytic queries against data sources of all sizes ranging from gigabytes to petabytes. Presto was designed and written from the ground up for interactive analytics and approaches the speed of commercial data warehouses while scaling to the size of organizations like Facebook.

Name: ProGuard
Home: http://proguard.sourceforge.net/
   ProGuard is a free Java class file shrinker, optimizer, obfuscator, and preverifier. It detects and removes unused classes, fields, methods, and attributes. It optimizes bytecode and removes unused instructions. It renames the remaining classes, fields, and methods using short meaningless names.

Name: Apache Pulsar
Home: https://pulsar.incubator.apache.org/
   Apache Pulsar is an open-source distributed pub-sub messaging system originally created at Yahoo and now part of the Apache Software Foundation.

Name: Qpid Java Broker
Home: http://qpid.apache.org/components/java-broker/
   A message broker written in Java that stores, routes, and forwards messages using AMQP.

Name: Quercus
Home: http://quercus.caucho.com/
   Caucho's PHP on the JVM

Name: Redline Smalltalk
Home: http://www.redline.st/
   Smalltalk on the Java Virtual Machine.

Name: relproxy
Home: https://github.com/jmarranz/relproxy/
   Simple Java and Groovy hot class reloader

Name: Resin
Home: http://www.caucho.com/
   Resin is a high-performance, cloud-optimized java application server

Name: RestClient
Home: http://code.google.com/p/rest-client/
   RESTClient is a Java application to test RESTful webservices

Name: Rest Shell
Home:
   Command-line shell for interacting with Spring HATEOAS-compliant REST resources

Name: Riak
Home: http://docs.basho.com/index.html
   Riak is a distributed database designed for maximum availability: so long as your client can reach one server, it should be able to write data. In most failure scenarios the data you want to read should be available, albeit possibly stale.

Name: RoboVM
Home: http://www.robovm.org/
   The goal of the RoboVM open-source project is to bring Java and other JVM languages to iOS. RoboVM's ahead-of-time compiler translates Java bytecode into native ARM or x86 machine code that runs directly on the target CPU without being interpreted. The runtime is based on Android's runtime classes and includes a Java to Objective-C bridge which makes it easy to use native Cocoa Touch APIs from Java.

Name: Apache RocketMQ
Home: https://rocketmq.apache.org/
   Apache RocketMQ™ is an open source distributed messaging and streaming data platform.

Name: Roo
Home: http://www.springsource.org/spring-roo
   Spring Roo: rapid application development tool for Java developers

Name: Rundeck
Home: http://rundeck.org/
   Turn your operations procedures into self-service jobs. Safely give others the control and visibility they need

Name: s3cmd
Home: http://s3tools.org/s3cmd
   command line S3 client

Name: Apache S4
Home: http://incubator.apache.org/s4/
   S4 is a general-purpose, distributed, scalable, fault-tolerant, pluggable platform that allows programmers to easily develop applications for processing continuous unbounded streams of data.

Name: sbt
Home: http://www.scala-sbt.org/
   sbt is a build tool for Scala and Java projects that aims to do the basics well

Name: SBuild
Home: http://sbuild.org/
   SBuild is a fast and reliable build system most suitable for projects targeting the JVM. SBuild itself and the buildfiles are written in Scala. But typical build system maintenance tasks require almost no special Scala knowledge.

Name: Scala
Home: http://www.scala-lang.org/
   Scala is a general purpose programming language designed to express common programming patterns in a concise, elegant, and type-safe way