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TripleF is a middleware for a Distributed File System, developed totally in Java. It allows highly availability, reliability and scalability to the system, through the data replication, resulting in system's highly fault tolerance.
Chordless is a Chord and DHash implementation written in java. It implements almost everything from Chord and DHash described at http://pdos.csail.mit.edu/chord/, as well as some extra features such as transactions and remote method invocation.
Jather aims to provide an easy to use library for clustered process execution in Java. This library aims to provide a simple API and allow applications to add clustering functionality with little change to the existing code.
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Fura is a self-contained grid middleware that allows the grid enablement and distribution of applications on heterogeneous computational resources. Fura features a web-based GUI, wizard-guided installation and configuration, and Web Services compliance.
Sequoia is a database clustering middleware offering load balancing and transparent failover. Databases are replicated over multiple nodes and Sequoia balances the queries between them. Sequoia supports online maintenance and recovery operations.
Jgroup/ARM is a replication framework that supports group method invocations, hides replication from the clients, and partitioning in distributed systems. In addition, the replication management facility supports autonomous replica deployment and recovery
JaneySpaces is a network abstraction library based on a space of distributed objects. It is designed to fit with traditional Object Oriented designs and principles, and to be as unobtrusive as possible when it comes to the structure of your application.
Distributed event bus library for passing application events to listeners running anywhere on the network. Library is a lightweight wrapper over the JGroups toolkit with event filtering features.
Command line tool that can view multiple log files remotely and blend them into a single output based on the appropriate dates within the log files themselves. Has cat and tail modes available. Support for multiple local/remote protocols
Gridder is a group of portlets that simplify the use and administration of grid services. Especially for job submission management. Gridder also extends and documents the functionality of the OGCE Bundle. It is plenty of useful documentation.
Alternative implementation of Spring framework remoting subsystem that supports different schemes of remote communication between client and server (1-1, 1-many, dynamic services discovering).
The Gridbus Grid Service Broker, is a service-oriented, economy and data-aware resource broker system that uses a simple, extensible middleware independent architecture that mediates access to distributed resources on a local / Global Grid of computers.
Provides distributed method invocation capabilities to regular Java classes with limited or no extra work for the developer. The workload is balanced over participating machines. Java API, Anders Björklund
OpenRDS (Open Requisition Distribution System) is a framework written in Java/RMI conceived for making requisition-based distributed systems (clustering) easy to develop/manage. It's design emphasizes robustness, simplicity and scalability.
JShaft is a configuration and supervision tool for clustered JEE architectures.
Features : GUI for architecture description, script generation for automated configuration of cluster nodes, supervision tool for the deployed cluster.
A distributed, peer-to-peer, server-less communication & messaging solution for JAVA (JMS), C++ and .NET applications, integrates with JBoss, WebLogic & WebSphere. Offers guaranteed delivery, security and transactions. Supports TCP, SSL & HTTP protocols.
JunitTCG will be a TestCaseGenerator for the use with JUnit. It will implement WebServices which use the globus toolkit (www.globus.org) to distribute Unit Testcases to a grid of execution hosts.
Ridiculously simple, Prevayler provides transparent ACID persistence and replication for plain old Java objects. It is literally several thousand times faster than using a relational database through JDBC.
A set of tools for working with J2EE application servers. it includes a generic JDBC datasource implementation, and a jndi/rmi/iiop multiplexer for accessing remote application servers through a standalone web container