Free computer systems groups software for linux

Score Cluster System Software is a cluster system software is designed for the high performance cluster environment without using the TCP/IP protocol stack. Score Cluster System Software features high performance communication, efficient computer management and single-system image, higher usability and availabily, and a seamless cluster environment.
Enhancements:
- Support for PM/Myrinet2XP devices and X11 relay has been restored.
- This release adds checkpointing, autoconfiguration, and dynamic reconfiguration.
- It eliminates the need for kernel patching through the use of modules.
- There are many bugfixes.

Coda is an advanced networked filesystem. The project has been developed at CMU since 1987 by the systems group of M. Satyanarayanan. in the SCS department.
Coda is a distributed filesystem with its origin in AFS2. It has many features that are very desirable for network filesystems. Currently, Coda has several features not found elsewhere.
1. disconnected operation for mobile computing
2. is freely available under a liberal license
3. high performance through client side persistent caching
4. server replication
5. security model for authentication, encryption and access control
6. continued operation during partial network failures in server network
7. network bandwith adaptation
8. good scalability
9. well defined semantics of sharing, even in the presence of network failures
Enhancements:
- Coda now works on 64-bit systems.
- The client and server were successfully built and used on a machine with em64t extensions with a 64-bit Linux kernel.
- The new RVM-1.14 and RPC2-2.5 releases also incorporate some essential 64-bit fixes.
- Another welcome change is that venus now tries to keep cached access rights available for users even across system reboots or client restarts, which should improve life for people who frequently shut down or dual boot their machines.

System Integrity Checker can make sure that no unauthorized changes have been made to your computer systems.
Installation:
$ tar zxvf sic-x.y.z.tar.gz
$ cd sic-x.y.z
$ ./configure
$ make
$ make install
Enhancements:
- Threading support was improved.
- Support for internationalization and localization (i18n) was added.
- An XML Schema was created for the configuration file.
- Code cleanups were made.

openMSX is the MSX home computer system emulator that aims for perfection.

Almost all MSX machines are emulated: MSX1, MSX2, MSX2+, Turbo-R... And also quite some extra hardware is emulated: SCC, SCC+, FM-PAC, Music Module, PSG, Moonsound, Sunrise IDE, Disk Controllers, MIDI, almost all memory mappers, etc... Actually, more than any other MSX emulator!

It also features quite some extras: rendering using openGL acceleration, full screen, built in console (based on TCL), MSX debugging facilities, scalers, using directories as disk images (still buggy though), screenshots, speed settings, frame skip, scanlines, TV-blur, afterglow (GL), and more...

For a really long description: again, please see our home page.

Do note that openMSX is alpha software, which means that some things work but not all features are implemented yet.

Dpsyco is a automated system to distribute system configurations to several computers. It is written mainly for the Debian distribution but should be portable (without too much difficulties) to other distributions or Unixes as well.
It consists of a number of shell scripts to perform the desired actions. With it you can handle users, add ssh-public-keys, patch the system, update things using cfengine, install files (overriding other package files), and more.
Main features:
- Handle users.
- Handle groups.
- Handle ssh access.