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SETI@Home is the largest public distributed computing project in terms of computing power: on September 26, 2001 it reached the ZettaFLOP (10²¹ floating point operations) mark--a new world record--performing calculations at an average of 71 TeraFLOPs/second. For comparison, the fastest individual computer in the world is IBM's ASCI White, which runs at 12.3 TeraFLOPs/second.

Check the status of the SETI@home data server and tapes.

View derived statistics for SETI@home.

Get answers to all of your SETI@home questions in the SETI@home FAQ.

Read a short research paper, written in 1998, about the origins of SETI and SETI@home.

See my SETI@home stats.
See my team's SETI@home stats.

Entropia 3000, the new version of the client, is available as of April 30, 2001. If you already have the Entropia 2000 client installed, exit it and restart it to automatically download the new client (the upgrade file for the new client is 5.1 MB).

The member site contains stats about all of the current projects, and other information.

See more information about the client in an overview. A Macintosh client (for classic MacOS on PowerPC) is available from the download page as of April 3, 2001. A Windows client is available as of April 27, 2001.

See the progress of code development for the project.

The site is also available in German.

United Devices' first project is a bioinformatics research project for the University of Washington in St. Louis, Missouri. The project, called HMMER, uses the Hidden Markov Modeling technique to compare known DNA sequences (amino acids) against the data from the Human Genome Project to find similar sequences.

United Devices' second project is searching for cancer-fighting drugs in partnership with the National Foundation for Cancer Research (NFCR) Centre for Drug Discovery in the Department of Chemistry at the University of Oxford, England. This project began in March, 2001. Oxford has a detailed website about the science behind the project. United Devices also has the latest news about the project and its results.

A third project will be done in cooperation with iArchives. It will "scan, store, and index images of original documents," like newspaper articles, microfilm, or geneological annals, "allowing these documents to be searched and retrieved through the Internet and/or intranets." This project will begin in the third quarter of this year.

Starting some time soon, United Devices will also begin its first commercial project, web performance testing, in partnership with Exodus Communications. User participation in this project is optional, but your work will help United Devices stay in business and run more voluntary projects.

The client currently participates in one or more of the following projects: an exhaustive regression analysis to identify the specific factors that ease the suffering of chemotherapy recipients, a gene expression analysis and a study of the molecular dynamics of protein folding to create greater understanding of the behavior of cancer cells and how they interact with potential new treatments, and an exhaustive regression analysis of clinical trial data for Amarillo Biosciences, Inc. for a treatment of fibromyalgia syndrome.

Parabon has a sweepstakes for active participants. You can qualify to win $100 every day your Pioneer client connects to the Parabon servers, and one participant a month wins $1000. Parabon has awarded $34,700 (US) in prizes to date.

Version 0.60 is available as of February 26, 2001.

September 27, 2001 Note: The project coordinators have stated that this project is on hold indefinitely, until they have time to support it again. They will let us know when it resumes. For now, please try a different project.

Version 2.15 of the Windows graphical screensaver and the text-only client application are available as of November 20, 2001. Version 2.10 of the client is available for Linux (on Intel). Version 1.34 is available for Solaris (2.7 or higher) at the old project site as of February 25, 2001, and for Mac OS X at the old project site as of June 1, 2001. MacOS9 and other Unix flavors of the client are in development.

See independently-maintained hourly team and user stats for this project at statsman.org.

See the original Folding@Home project.

Join one of the discussion groups about this project:
help with running the client
bug reports (client side)
operations issues (server side)
discussions of the science
open topic forum

Or join a discussion group about the original project.

Version 0.99 of the client is available as of August 2, 2001. Note: the software is still undergoing development, so new features are added fairly often. The first release client, version 2.0, should be available in early 2002. A work unit takes 24-48 hours to complete, but the software now has checkpointing so that you can restart work unit if you have to stop it before it finishes. For modem users, the client will continue designing new genes for the last work unit you downloaded until you reconnect to the server, and then it will upload your results and download a new work unit to work on.

Genome@home's first experiment concluded successfully in early March, 2001, with more than 1000 users creating more than 15,000 new genes for 217 proteins. As of November 12, 2001, Genome@home has begun Phase 2 of its protein design experiments. This phase will study "all single-chain proteins in the RCSB Protein Data Bank" with a length up to 150 amino acids--over 3,015 different proteins.

See independently-maintained hourly team and user stats for this project at statsman.org.

Join a discussion group about this project.

The Beta version 0.7 of the client is available as of December 15, 2001. This version of the client has support for users behind proxy-based firewalls, uses your CPU and network bandwidth more efficiently, and has many other new features. This project is better suited for users with full-time Internet connections because a work unit completes in only a few minutes on my Pentium II 350 and the client doesn't buffer work units.

Join a discussion group about Übero.

The client is currently only available for the Windows platform. It runs in the system tray, but it also has a graphical interface if you want to watch what it's doing. It does not require a continuous Internet connection. Version 0.77b of the client is available as of December 20, 2001. Note that with this version, if you pause or restart the client, you will lose all of the conformers you've generated for the current work unit. With version 0.75b you only lost the current conformer.

Join the D²OL Forum.

See a white paper about this process: The Virtual Laboratory: Enabling Molecular Modeling. The biology collaborator working on this project has already designed a drug to counteract an ECE enzyme involved in heart stroke, and is currently using the Virtual Laboratory to study liver cancer.

2.8015.469 of the client is available for most major platforms as of June 5, 2001.

See my RC5-64 stats, my OGR-24 stats, and my OGR-25 stats.
See my team's RC5-64 stats, OGR-24 stats, and OGR-25 stats. If you are running the Solaris client, join us!

Version 1.30 is available as of November 25, 2001. If you have an older version, please upgrade to this new version as soon as you can. The older versions can't connect to the new project server. 1.30 and later will be able to detect and switch to new project servers automatically.

For Solaris users: you can easily build an executable for this project. Download the source code, remove the hard returns (^Ms) from Makefile and asm/sparc/*.s, then run make spCL to build the executable.

For all users, if you connect to the Internet through a proxy server, you can create a file called proxy.txt and add to it your proxy server name and port (ex: my.proxy.server.com 80) and the client should be able to connect to the project server through your proxy. If that doesn't work, you can submit points manually.

Join a discussion group about this project.

Note: peerReview does its work when a network connection is present. Modem users will notice that the client is not active while they are offline. A work unit is completed in 15 minutes, so it is possible for modem users to contribute useful work. The client supports some firewalls.

Porivo is developing future projects to research science, engineering, and Internet research-related problems. Some future projects will be more CPU-intensive, allowing modem users to work offline.

Version 3.0 of the PEER client is available as of June 18, 2001 for Windows, Solaris and Linux. The client allows you to configure how much work your system contributes. Windows PEER users' clients will update automatically. Solaris and Linux users can download the software by going to the user login page and selecting "Download the Porivo PEER."

The client is in alpha testing currently. Version 0.8.1a for Windows and Linux is available as of August 21, 2000.

This project requires a continuous network connection rather than CPU power.

Participants must have a full-time, high-speed Internet connection and must run the CapCal Java client application at least 10 hours per day or 70 hours per week. Under Windows 98 and Windows ME, the client only runs when the screen-saver is active. Under Windows 2000 you can configure it to run any time or only during specific times. You can register to be a participant here.

The client is currently available for Windows, but Linux and Macintosh versions are in development. The client only needs to transfer data for a few minutes every few days, so it supports modem-users well.

The site is also available in German.

A work unit completes in about 20 minutes on my Pentium II 350, so this project is more suitable for people with full-time Internet connections.

Note: when you view the introduction page of the website, your browser window may shake and move around on your screen for a few seconds. This is caused by a JavaScript that is used to demonstrate "shaky" markets :-) It won't hurt your browser or your system. You can skip the intro and the shaking window and go straight to the home page.

Unix users can participate in GIMPS using precompiled clients or source code at Ernst Mayer's site and the manual testing forms at the PrimeNet server.

Submit new primes to the Top 5000 Primes list. Version 6.7 of Proth is available as of July 16, 2001.

See the list of prime numbers that I've found.

The client will work behind a firewall if your firewall lets through traffic on port 5060/tcp, or if you have a SOCKS firewall. To run it behind a SOCKS firewall, run it with options like the following:

java -DsocksProxyHost=<host> -DsocksProxyPort=<port:default=1080> jistributed.JistributedClient krypvier.ii.uib.no

A Windows client is available as of November 6, 2000. A Macintosh OS X client is also available. The client is available for many other Unix platforms.

The Delta=7 project was completed on November 15, 2000. The Delta=8 project was completed on December 21, 2001. The Delta=9 project began on December 21, 2001. project has now begun. variants, too.

See the project's progress.

Version 1.5 of the client is available as of February 17, 2001.

There is a $500 (US) prize for the people who discover a new pair of Double Wieferich prime numbers. Users behind firewalls are supported. Linux and HP/UX users can download and compile source code to participate. I have hacked up the source code as follows to make a Solaris executable:

• use gnu make for all building
• in src/main.c, comment out getopt.h includes and "ifndef __hpux" sections
• in src/Manager.c, comment out getopt.h includes and "ifndef __hpux" sections
• the instructions say to run ./configure, then run make -f Makefile.hpux. configure generates Makefile, so run make -f Makefile instead.

The executable runs, but I haven't run it long enough yet to see if it is doing useful work and returning results.

This site is also available in Italian and Russian.

Version 3.7 of the client is available as of January 6, 2001.

Join a discussion group about this project.

To participate in the project, download a precompiled, statically linked executable for Linux ELF, FreeBSD ELF, or Solaris 5.6 (you can also download and compile the source code), and also download a perl script called PcpSieve.pl which runs the executable, scans the output for record solutions, and emails the solutions to the project coordinator (you can also run the executable manually, search the output manually and email any record solutions you find).

This site is also available in German.

Join a discussion group about prime numbers.

The client runs as a Windows screensaver or as a command-line application. You must have Java Runtime Environment 1.2.2 or higher installed to use it. The client is not available for download on the Internet yet, but will be available soon. The client only needs to be connected to the Internet to receive work or send results.

See example images of fractal flames.

Note: the university currently does not have a stable Internet connection. The project pages and project server may occasionally be unavailable. If you have already downloaded the client, it will continue to run while the project server is unavailable. If the qoopy symbol in the top right corner of the client window is black, click on it to try to connect to the server.

qoopy's first project is EvoChess, which evolves chess-playing programs. Each user's client generates some programs. The more successful programs survive and combine with other users' chess programs to speed up the evolutionary process. Users can play against the evolved chess programs and see information about the best evolved programs in the stats pages. The latest version of the project client is available as of November 1, 2001. It only allows programs which look ahead 5-10 moves to survive.

The client is available for Win32 and Linux and Unix platforms that have the Java 1.3 plugin. It should support users behind firewalls since it uses HTTP for communications.

This project is still in development and requires you to install Java and Java3D libraries. The Windows software downloads everything you need, but for the Linux and Solaris users I recommend this project only for users experienced in downloading and installing Java packages. Version 0.5 is available as a July 30, 2001.

Users can participate in many activites from describing the things that someone should know to fully understand an event to explaining the relationship between a pair of words or to describing a picture.

As of November 25, 2001, the project has personal stats pages and rankings for proofreaders. Eventually it may have leader boards so that each proofreader can see how he or she is doing compared to other proofreaders. The site now also has discussion forums.

The pilot project concluded in June, 2001. You can see the results of the study. It isn't known when or whether a new project will begin, but you can still try the tasks that were done in the pilot study.

This project is built on three basic principles:

1. Communities create knowledge
2. Communities determine the worth of knowledge
3. Knowledge is priceless