I'll let the site do the talking:

UBCD4Win is a bootable CD which contains software that allows you to repair/restore/diagnostic almost any computer problem. All software included in UBCD4Win are freeware utilities for Windows®. UBCD4Win uses Bart's PE© to boot into a Windows® "pre-install" environment, basically Windows® booted from CD. With network support, the ability to modify NTFS volumes, recover deleted files, create new NTFS volumes, scanning hard drives for viruses, etc. this project is almost everything you need to repair your system problems. There are many other types of utilities included to allow you to recover and/or repair a damaged system. Additional applications included are CD Burning, Backup/cloning, Defragmenter's, Password recovery and more.

List of tools included with Ultimate Boot CD for Windows®
AntiVirus Tools
AVPersonal 6.30.0.17 Great full featured freeware AntiVirus solution
McAfee Stinger 2.3.9 Scans for a limited number of viruses
Trend Micro SysClean varies Scan your system for viruses
Applications
FireFox Update 1.0.4 Internet Browser

Site:http://www.ubcd4win.com/index.htm
PDF Reader 1.2 0201 PDF viewer
Popcorn Update 1.74 Email Client
Scribe 1.87 Email Client
UltraReader 1.01 File reader, supports many formats
CD Burning Applications
DeepBurner Allows you to burn CD's in the BPE environment.
Express Burn Update 1.07 CD Burning software
SmallCD 1.12 CD Burning software
Disk Tools
-Backup/Cloning
Disk Copy N/A Floppy disk copier
Disk Image 1.15 Creates and restores images of disks to files
DrvImagerXP 2.0 Lexun utility. No support on their new website and development has ceased. Please use at your own risk.
DriveClonerXP 2.1 Lexun utility. No support on their new website and development has ceased. Please use at your own risk.
ImgMaker 1.1
-Defrag
DefragNT 1.9 Hard disk defragmenter
Dirms 1.2.20 Comand Line utility to defragement your entire drive
-Diagnostic
Bst5 5.1.4 Bart's Stuff test. Small Win32 application for long time heavily stress testing storage devices. Supports testing at file and device levels.
chkdsk N/A
DskChkup 1.1 Allows you to monitor the SMART attributes of a hard drive
Disk Check 1.0.57 Utility to check disks for errors and benchmarking
HDTune 2.1 Hard disk utility that will: Benchmark, Error scan, display temperature, SMART heatlh information and provide other hard drive information
MaxBlast 4.0 Maxtor MaxBlast for Win. Sorry, still trying to get it to work properly.
WinDLG 1.02 Western Digital HDD diagnostic software for Windows
-Partition
MbrFix 1.0.0.4 Fix or create Master boot record
MBRWiz 1.52 Master Boot Record Wizard
TestDisk Update 5.8 Tool to check and undelete partitions
-Security
Drive Erase 1.02 Permanently erases data from hard disks, removable media, partitions, files and folders.
Disk Wipe 1.1 Securely wipes data from discs
Eraser 5.7 Completely remove sensitive data from your hard drive by overwriting it several times with carefully selected patterns
HD Cleaner Update 2.361 Safely removes Web cookies, Web history, recent documents history, any hidden user traces and more
File Management
-Compression
IZArc 3.4.1.6 Popular freeware compression tool.
-Explorers
a43 Update 2.44 File management
Agent Ransack 1.73 File search
ExplorerXP Update 1.06 File management
WinDir Stat 1.1 Disk usage statistics viewer and cleanup tool.
-Recovery
Copy Handler 1.28 Small tool designed to copy/move files and folders between different storage medias
DBXtract 4.5 Repairs PST files for Outlook express
Disk Investigator 1.31 Display the true drive contents by bypassing the operating system and directly reading the raw drive sectors. View and search raw directories, files, clusters, and system sectors. Verify the effectiveness of file and disk wiping programs. Undelete previously deleted files
Fab's AutoBackup Update 2.0 Backup and restore personal settings like emails, documents, internet browser bookmarks
File Recovery Update 4.0 Data recovery for damaged files and erased partitions
Floppy Repair 1.0 Eliminates bad sectors of Floppy disk surface, does not hide bad sectors in the file system, as Scandisk like utilities, it really restores them
Free Undelete 1.0 Data recovery program for deleted files
Handy Recovery 1.0 Designed to restore files accidentally deleted from hard disks and floppy drives
SectorSpyXP 2.01 Lexun utility. No support on their new website and development has ceased. Please use at your own risk.
Recovery Manager 1.0 Backup & Restore, Duplicate, Recover files accidentally deleted or from corrupted media, and Format Digital Flash Media
Restoration 2.5.14 File Recovery, restore files that have been deleted from the Recycle Bin
UnChk 3 Recover CHK files
Unstop Copier 1.9 Recovers files from disks with physical damage
Linux Tools
Explore2fs 1.00 Allows exploration of Linux partitions in the Windows environment
R-Linux 1.0 Recovery utility for the Ext2FS file system
Malware Tools
AdAware Update 1.06 SE Scans remote hard drives for spyware, etc.
CWShredder Update 2.15
EzPCFix ?? Helpful tool when trying to remove viruses, spyware, other troublesome advertising programs, and malware from your computer.
Hijack This 1.99 General browser hijacker detector and remover
Network Tools
Cisco Cisco VPN Client. Still working on this. Further steps are necessary to complete plugin.
FileZilla Update 2.2.1.3c FTP Client
IPScan 2.21 Fast IP scanner for Windows
NetStumbler 0.4 Find wireless networks
nwdskpe Novell's NetWare Client to access NetWare servers by IP/IPX
Putty .58 Implementation of Telnet and SSH for Win32 and Unix platforms, along with an xterm terminal emulator
Real VNC Server 4.0 Remote control software which allows you to view and interact with one computer
ShowTraf 1.4.1 Show Traffic, Monitors network traffic
Tight VNC Viewer 1.2.9 Remote control software package
UltraVNC 1 RC18 Remotely control a computer over any TCP/IP connection
VNC Neighborhood 1.1.8 VNC server TCP scanner, uses Microsoft Windows Networking features to locate computers in Microsoft Windows domains and workgroups
Password Tools
cmos Update 4.6 Find your CMOS password and/or replace it
InsidePro 1.0 Passwords recovery, encryption and cryptography
KeyFinderPE 1.41 Will find your Windows installation key, the included version works in PE
PasswordPro 1.3 MD5, MD4, MySQL, SHA-1 hashes password recovery, password keeper, password generator, hash generator, dictionary generator, etc
Sala Password Renew 1.0 RC2 (re)set the passwords of any user that has a valid local account, create a new local user with administrator rights, and set administrator rights to existing user on your NT system
Registry Tools
Erunt 1.1h Emergency Recovery Utility -Registry backup and restore
RegBrws 1.2.2 Browses local/remote system registry using a specified account
RegCleaner 4.3 Remove obsolete registry entries from software that you may have deleted
RegEditPE 0.9c Registry Editor for PE, SourceForge project
XSP 6.6 X-Setup Pro PE version; Windows tweaker, allows you to change many Windows settings
Shell Features
ASPI N/A CD Support
AutoRamSizer 1.9 Adjusts size by the amount of RAM installed on the system
AutoRun N/A BPE functionality
atapi_824146 N/A XP Patch
BartPE 5.1.4 small win32 application for long term heavy stress testing storage devices at the file and device level
BGInfo 4.05 System information
dcomlaunch N/A Launch DComLaunch service first -for SP2
Dialup Ability to use your modem, you will need to create a modem driver plugin for your particular model. Email me for support, I will try to help
DosPE 1.0.6 DOS 16-bit support
GeoShell N/A Adds more "XP" feel, enhanced startbutton, quicklaunch, taskbar, etc.
keyboard Keyboard mapper
MMC 1.2 Microsoft Management Console
mstsc N/A Remote desktop client
nu2menu Menu system
onscrkb N/A On Screen Keyboard tool
peinst HD installation tool for PE
penetcfg PE Network Configurator
PeLoader Removes several restrictions set in Bart's PE such as 6 app.'s & 24hr limit
PPOE2k3 PPPOE dialup network support for Win 2k3
PPOEXP PPPOE dialup network support for XP
ramdisk Creates a RAM drive in the PE environment , Bart's new version included in his latest BETA
sermouse Serial mouse support
UnxUtils GNU utilities for Win32
USB 1.0 My USB plugin, tested on a few simple devices. Not completely plug and play but I'm working on it.
VBdlls 5.0&6.0 Visual Basic DLL's, makes these runtime dll's available in PE
ViewChmHlp N/A My help and CHM file plugin, adds support so these files can be viewed
WSHSupport Windows scripting host support which allows VBScript and JScript to run
System Information Tools
-Information & Diagnostic Tools
IDE Drive 2.0 IDE drive information, very extensive
Nero InfoTool 3.0 Detailed drive and system information for your CD/DVD drives
QuickBench 1.1 Benchmarking application
System Info 1.48 Provides detailed system information, network info., etc.
Unknown 1.2 Helps discover what unknown devices in Device Manager really are
WinAudit 1.3 Audits your software and hardware configurations
WinCPUID 3.3 Displays the CPU information: Shows Frequency, Multiplier, Chipset Info. etc
WUL 1.1 Windows Update list, lists updates and patches installed on a system
- Stress Test/Benchmark Tools
CPU Bench 4.0.06 CPU benchmarking software
MemTest Update 3.2 Memory tester for Windows, please read manual.htm for instructions and advice
P95 23.8 Prime95, stress tester, popular with overclockers
StraightMark 1.2.1 System benchmarking tool
Other Fixes
DellFix N/A Disabled by default -this plugin is available for Dell systems that require additional driver files from their "Dell" XP CD, only enable if you receive the "aarich.sys file is missing" error message
RunScanner ? Registry redirector plugin developed by Paraglider. Used for launching spyware detector programs and has been tested with SpySweeper and Ad-Aware


Site:http://www.ubcd4win.com/index.htm