Applications for USB Drives

Source
Editors/Readers

• Editor: Papyrus, EditPad, Atlantis,
• Office: AbiWord, OpenOffice (instructions in a PDF here)
• Outliner/note taker: TexNotes Pro
• PDF reader: FoxIt PDF
  Reader
• Web Authoring: NVU
• Wikis: MediaWiki

Web

• Browsers: Portable Firefox, OperaUSB, Portable Safari
  
• Offline browser: HtTrack, Webaroo (for U3)
• Instant messaging Miranda, Trillian Anywhere, Easy Message, AltMe
• Email: JBMail, Portable Thunderbird, EmailVoyager, PocoMail PE, FoxMail, i.Scribe / InScribe, Email Segway, Email Commander, Reach-a-Mail, a 'complete portable email system',
  
• FTP clients: FileZilla
• Bookmark manager: Bookmark Base

Utilities/OS

• Alternative Windows shell: BBLean
• File manager: Total Commander
• Network diagnostics: PingPlotter
• Operating Systems: Linux, Windows CE, VPM (Linux), Damn Small Linux
• Servers: The Uniform Server, MiniServer
• Start menus/launchers: Absolute Startup manager, Startup Control Panel, PStart,
  
• System information tool: SIW

Security

• Anti malware: Ad-Aware
• Encryption: CryptoAnywhere,
  Cryptainer, Portable Vault, TrueCrypt, useful guide on encrypting a drive from dekart, CryptoStick,
• Password
  manager/logon: Roboform
  Portable, DigiSAFE
  PassVault, Password
  Agent, Keepass, CyberScrub KeyChain (also files in forms), Arovax TraySafe, Proteg (from Inflexpoint), Password Manager, Blue Micro USB Flash Drive Logon, PasswordVault
  

Productivity

• Animation: Anim8or, PePaKuRa
• Calculator: Calc98
• PIMs/organisers: EssentialPIM, Sunbird , AZZ Cardfile
• Sticky notes: ATNotes
• Task Organisers:
  ToDoList
• Lotus Notes on a Stick
  

Leisure

• Games: Beneath A Steel Sky, Flight of the Amazon Queen
• Music: Zoom
  Player, XMPlay, Coolplayer, MPUI (frontend for MPlayer), foobar2000,
• Video player: Media
  Player Classic

Resources

• Medical: Angel Mobile
  Medical Profile, personal medical history (Med-a-Drive)

Hardware/packages

• Tax software: TaxCut
• A USB drive for the blind: Serotek's FreedomBox is a USB drive containing a text-to-speech and speech-to-text software as well as mainstream applications like Word, Firefox and Skype. This enables blind people to use any Windows computer just by plugging in their drive. Prices at $129 (or £69). (via isolani)
• Portable VoIP Phone:
  "Skype 2.5 has been built into the Virtual CD-Rom, no need to download Skype software to your computer, you only need to plug the Flash Drive Phone into any internet connected PC or laptop, the Skype 2.5 will pop-up automatically... [also] compatible with all kinds of softphones, including VoipBuster, VoipCheap, Voipstunt, Firefly, X-pro, Net2phone, Eyebeam, etc."
• One touch USB hard drive backup: Pexagon Store-It
• Lighting control software: Martin Lightjockey 512 USB,

Other directories/resources/blogs:

• kikizas.net
• TinyApps
  
• NoInstall
• USBspace.com
• USB Flash Drive Freak
• USBApps
  
• Portable Freeware
• Stand Alone
• What’s On My
  Pen Drive?
  
• Haxial (actually software
  written by them for XP and Macs: All work on USB drives)
  
• Engadget posting + comments