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"Baratine is a new distributed in-memory Java service platform for building high performance web services that combine both data and logic in the same JVM. Say again? In Baratine, the data lives within the service and the service owns its own data. This means: the data is not owned by the database the data is not modified by another process the data is not separate and distinct from the service => The data sits right in the service in the same JVM, the same thread, and the same class instance."

Jamm provides MemoryMeter, a java agent to measure actual object memory use including JVM overhead.

Buen set de tests comparativos entre varias implementaciones de paralelismo local.

"Configuration library for JVM languages. Overview implemented in plain Java with no dependencies extensive test coverage supports files in three formats: Java properties, JSON, and a human-friendly JSON superset merges multiple files across all formats can load from files, URLs, or classpath good support for "nesting" (treat any subtree of the config the same as the whole config) users can override the config with Java system properties, java -Dmyapp.foo.bar=10 supports configuring an app, with its framework and libraries, all from a single file such as application.conf parses duration and size settings, "512k" or "10 seconds" converts types, so if you ask for a boolean and the value is the string "yes", or you ask for a float and the value is an int, it will figure it out. JSON superset features: comments includes substitutions ("foo" : ${bar}, "foo" : Hello ${who}) properties-like notation (a.b=c) less noisy, more lenient syntax substitute environment variables This library limits itself to config files. If you want to load config from a database or something, you would need to write some custom code. The library has nice support for merging configurations so if you build one from a custom source it's easy to merge it in."

"Reactive Streams is an engineering collaboration between heavy hitters in the area of streaming data on the JVM. With the Reactive Streams Special Interest Group, we set out to standardize a common ground for achieving statically-typed, high-performance, low latency, asynchronous streams of data with built-in non-blocking back pressure-with the goal of creating a vibrant ecosystem of interoperating implementations, and with a vision of one day making it into a future version of Java."

"The Open Source tool for monitoring applications running on the JVM."

The VMKit project is a framework for building virtual machines. It uses LLVM for compiling and optimizing high-level languages to machine code, and MMTk to manage memory. J3 is an implementation of a JVM with VMKit.

"Trireme runs Node.js scripts inside the JVM."

"An open source electronic trading library for the JVM"

ScalaMeter is a microbenchmarking and performance regression testing framework for the JVM platform that allows expressing performance tests in a way which is both simple and concise.  It can be used both from Scala and Java. write performance tests in a DSL similar to ScalaTest and ScalaCheck specify test input data specify how test results are collected organize performance tests hierarchically

"Saddle is a data manipulation library for Scala that provides array-backed, indexed, one- and two-dimensional data structures that are judiciously specialized on JVM primitives to avoid the overhead of boxing and unboxing. Saddle offers vectorized numerical calculations, automatic alignment of data along indices, robustness to missing (N/A) values, and facilities for I/O. Saddle draws inspiration from several sources, among them the R programming language & statistical environment, the numpy and pandas Python libraries, and the Scala collections library."

"Reactive Streams is an initiative to provide a standard for asynchronous stream processing with non-blocking back pressure on the JVM."

"jchardet is a java port of the source from mozilla's automatic charset detection algorithm"

juniversalchardet is a Java port of 'universalchardet', that is the encoding detector library of Mozilla

"Cascalog is a fully-featured data processing and querying library for Clojure or Java. The main use cases for Cascalog are processing "Big Data" on top of Hadoop or doing analysis on your local computer. Cascalog is a replacement for tools like Pig, Hive, and Cascading and operates at a significantly higher level of abstraction than those tools."