The ENBD (Enhanced Network Block Device) is an industrial-strength version of the Linux kernel NBD. It makes a remote disk look like a local block device, allowing cheap and safe realtime mirrors to be built over the net. It features internal block-journalling and multichannel failover.
JBoss is an Open Source, standards-compliant, Enterprise JavaBeans application server implemented in pure Java. JBoss provides JBossServer, the basic EJB container and JMX infrastructure, JBossMQ for JMS messaging, JBossMail for mail, JBossTX for JTA/JTS transactions, JBossSX for JAAS based security, JBossCX for JCA connectivity, and JBossCMP for CMP persistence. It integrates with Tomcat Servlet/JSP container and Jetty Web server/servlet container, and enables you to mix and match these components through JMX by replacing any component you wish with a JMX-compliant implementation for the same APIs. The goal is to provide a full J2EE stack in the Free/Open Source software world.
The Linux Virtual Server Project is a project to cluster many real servers together into a highly available, high-performance virtual server. The LVS load balancer handles connections from clients and passes them on the the real servers (so-called Layer 4 switching) and can virtualize almost any TCP or UDP service, like HTTP, HTTPS, NNTP, FTP, DNS, ssh, POP3, IMAP4, SMTP, etc. It is fully transparent to the client accessing the virtual service.
Keepalived for LVS aims to add a strong and robust keepalive facility to the Linux Virtual Server project. This project is written in C with multilayer TCP/IP stack checks. It implements a framework based on three family checks: Layer3, Layer4, and Layer5. This framework gives the daemon the ability of checking a LVS server pool states.When one of the servers in the LVS server pool is down, keepalived informs the Linux kernel via a setsockopt call to remove this server entry from the LVS topology. In addition, it implements a VRRPv2 stack to handle director failover.
The FOLK project aims to provide a single patch which incorporates as many Linux kernel projects as can be crammed in. Its goal is to allow people who are interested in experimenting with the different projects to get on with the experimenting, rather than spend time fixing clashing diffs. It also has the goal of giving some of the more obscure projects a better chance of being seen and used. It is not intended for "general use". If a given release is stable, that will be by sheer luck. These are experimental projects, of unknown quality and completeness, being thrown together in ways that the developers are unlikely to have even remotely considered.
Cplant (tm) is a collection of code designed with an emphasis on scalability, to provide a full-featured environment for cluster computing on commodity hardware components. Cplant (tm) system software provides a scalable message passing layer, scalable runtime utilities, and scalable debugging support. It is distributed as source code, which can be built for a specific hardware configuration. This consists of operating system code (in the form of Linux modules and driver), application support libraries and compiler tools, an MPI port, user-level runtime utilities, support for application debugging, and scripts for configuring and installing the built software.
The Score cluster system software is designed for the high performance cluster environment without using the TCP/IP protocol stack. It features high performance communication, efficient computer management and single-system image, higher usability and availabily, and a seamless cluster environment.