Stand-Alone Apps

Some of these do require installation but the EXE can be copied from the computer and placed on a portable device. No extra files are needed and they run fine.

SilentNight - CD/DVD Burning
http://www.silentnight2004.com/Micro.html

uTorrent - P2P File Sharing
http://www.utorrent.com

Defraggler - Disk Defragmenter
http://www.defraggler.com

JkDefrag - Disk Defragmenter
http://www.kessels.com/JkDefrag/

Webroot Analyzer - Vulnerability Checker
http://webrootdisp.net/analyzer/

Portable Anti-Virus - Virus Detection
http://www.data0.net/index.htm

Autoruns - Startup Manager
http://www.microsoft.com/technet/sysinternals/systeminformation/autoruns...

StartUpLite - Startup Manager
http://www.malwarebytes.org/startuplite.php

Avast! Virus Cleaner - Virus Detection
http://www.avast.com/eng/avast-virus-cleaner.html

ATF-Cleaner - Disk Cleaner
http://www.atribune.org/content/view/25/2/

F-Secure BlackLight - Rootkit Detection
http://www.f-secure.com/security_center/

BootSafe - Boot Settings
http://www.superadblocker.com/bootsafe.html

Dr. Web CureIt - Virus Detection
http://www.freedrweb.com/cureit/

WD Disk Check - Hard Drive Checker
http://support.wdc.com/download/

DriverGrabber - Driver Backup
http://www.siginetsoftware.com/forum/showthread.php?t=34

DTaskManager - Alternate Task Manager
http://dimio.altervista.org/eng/

FileASSASSIN - Secure File Shredder
http://www.malwarebytes.org/fileassassin.php

Hidden XP - Tweaking Tool
http://camtech2000.net/Pages/hidden_utilities.htm

Pocket Killbox - Secure File Shredder
http://killbox.net/

MyUninstaller - Uninstall Manager
http://www.nirsoft.net/utils/myuninst.html

Optical Info - CD/DVD Drive Checker
http://www.alexnolan.net/software/opticalinfo.htm

Panda Scan - Rootkit Detection
http://research.pandasecurity.com/archive/New-Panda-Anti_2D00_Rootkit-_2...

Prefetch Control - Tweaking Tool
http://www.majorgeeks.com/download2495.html

Prevx CSI - Malware Detection
http://www.prevx.com/freescan.asp

RockXP - System Information
http://www.rockxp.org/

Rootkit Revealer - Rootkit Detection
http://technet.microsoft.com/en-us/sysinternals/bb897445.aspx

AVERT Stinger - Virus Detection
http://vil.nai.com/vil/stinger/

System Spec - System Information
http://www.alexnolan.net/software/sysspec.htm

Xpy - Malware Detection
http://xpy.whyeye.org/download/

YamiPod - iPod Manager
http://www.yamipod.com/main/modules/home/