You can download applications in several categories.

Windows

Add-on
click for info
Description
BOINC Monitor A desktop gadget that shows the status of running tasks
ThreadMaster Control max CPU usage and prevent overheating (not specific to BOINC)
BOINCcalculator Show details of CPDN jobs
BoincTasks An advanced and powerful BOINC GUI
BoincLogX BoincLogX creates detailed logfiles for all BOINC projects.
TThrottle TThrottle throttles CPU usage to keep its temperature below a limit you select.
SETISpirit SETIspirit is free add-on tool for SETI@home users which provides information about the tasks, the SETI@home project status, workunits and credits, statistic charts and a detailed sky map.
BoincView Advanced BOINC manager for networks
BES Control max CPU usage and prevent overheating (not specific to BOINC)
SETI@BOINCWatch(.NET 2.0) A SETI@Home/BOINC client watcher! User statistics powered by BOINCStats. But now built with the .NET environment.
CPDNSpy Stats/Benchmarkprogram. Only for CPDN!!!
BoincSpy Views BOINC project statistics
SETI@BOINCWatch A SETI@Home/BOINC client watcher! User statistics powered by BOINCStats
SETI@home-MapView SETI@home-Mapview creates skymaps for the BOINC projects SETI@home-II, Einstein@home and Astropulse.
BOINC Client Configuration Windows GUI for editing the client configuration file
SQL Setup for BoincSpy Stores Workunits into SQL database
SETI@BOINCWatch(.NET) A SETI@Home/BOINC client watcher! User statistics powered by BOINCStats. But now built with the .NET environment.

Linux

Add-on
click for info
Description
rc.boinc (Slackware) rc.boinc - Slackware Startup Script
boinc-suse Init script for SuSE 9.2 and 9.3
boincctl Script to start boinc at boot time.
SETI@Boinc Tracker SETI@Boinc Tracker is a GUI Client for Tracking Boinc CLI Client!
CPU limiter Limits the CPU usage (good for laptops)
BoincTasks An advanced and powerful BOINC GUI (requires Wine)
KBoingMgr A Linux/KDE replacement for the standard BOINC Manager
Boinc bash script Boinc state displayer
BOINC Monitor Plasmoid to show BOINC status on the KDE desktop
BOINCSTAT Command line view of BOINC status
boinctui Fullscreen text mode manager for BOINC
MultiTail Multitail shows several simultaneous tails in different curses windows.
Boinctray A system tray application for monitoring the BOINC client
BOINCTail BOINCTail displays the status of jobs running in the BOINC environment in a 'tail-like' way.
boinctop top like view of boinc status
BOINCprog A BOINC project progress monitor

Mac

Add-on
click for info
Description
BOINC Statistics Lets you check BOINC stats from the Mac OS X Dashboard
BoincTasks An advanced and powerful BOINC GUI (requires Wine)
SETI@Boinc Tracker SETI@Boinc Tracker is a GUI Client for Tracking Boinc CLI Client!
Seti Check Revolutions Boinc state displayer. Only for seti@home!
BOINCMenubar 2 Mac GUI for BOINC
CPDNSpy Linux/Mac Stats/Benchmarkprogram. Only for CPDN!!!

Mobile

Add-on
click for info
Description
AndroBOINC BOINC graphical interface for Android devices
BoincTasks Mobile BOINC graphical interface for mobile devices (Android, iPhone, iPad)

Web browser toolbars and plugins

Add-on
click for info
Description
BOINC Server Status Yahoo! widget adds the BOINC Online Scheduler image to your desktop.
BOINC Statistics Shows your statistics for any BOINC project (requires the Yahoo! widget engine)
BOINC User Statistics Widget Widget displays statistics for BOINC projects (requires the Yahoo! widget engine)
SAH User Statistics An extension for Firefox (works only with 1.0 to 1.5; may work under Mozilla) that displays your stats for SAH

Web applications

Add-on
click for info
Description
BOINC Milestones Facebook application that posts credit milestones in your Status
SETI@home/BOINC progress status Show your SETI@home/BOINC progress on your homepage
GOINC GOINC: A Google homepage module for keeping tabs on BOINC.
Progress Thru Processors Facebook-based interface to BOINC
Forum signature showing jobs in progress A PHP script that generates a forum signature showing jobs in progress
Boinc LCS Shows the current state and other information from an unlimited number of BOINC clients connected to the Internet.
BoincPHP5-GUI Monitor and control Boinc from a web browser